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Draft: Imex support #149

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Draft: Imex support #149

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copy-pr-bot bot commented Oct 24, 2024

This pull request requires additional validation before any workflows can run on NVIDIA's runners.

Pull request vetters can view their responsibilities here.

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@guptaNswati guptaNswati marked this pull request as draft October 24, 2024 22:42
tariq1890
tariq1890 reviewed Oct 24, 2024
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ubuntu22.04/Dockerfile Outdated
# https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/sbsa/nvidia-imex_560.28.03-1_arm64.deb
RUN DRIVER_MAJOR_VERSION=$(echo "$DRIVER_VERSION" | cut -d '.' -f 1)
RUN if [ "$DRIVER_MAJOR_VERSION" -ge 560 ] && [ "$TARGETARCH" = "arm64" ]; then \
curl -fsSL -o /tmp/nvidia-imex_$DRIVER_VERSION-1_$TARGETARCH.deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/sbsa/nvidia-imex_560.28.03-1_arm64.deb && \
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This should not be required.

We should be installing the IMEX package this way

apt-get install nvidia-imex-550=550.127.05-1

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okay sure. but i don't know which all versions and arches will it be supported for now.

@guptaNswati guptaNswati force-pushed the imex-support branch 3 times, most recently from 3a062c1 to 3f36077 Compare October 28, 2024 22:40
@guptaNswati guptaNswati marked this pull request as ready for review October 29, 2024 18:29
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Tested memcpy in non-DRA mode by setting hostNetwork: true for driver container.

$ kubectl get pod -n gpu-operator
NAME                                                          READY   STATUS      RESTARTS   AGE
gpu-feature-discovery-krcdd                                   1/1     Running     0          110m
gpu-feature-discovery-s2bft                                   1/1     Running     0          108m
gpu-feature-discovery-w4bgn                                   1/1     Running     0          107m
gpu-feature-discovery-zcpfl                                   1/1     Running     0          114m
gpu-operator-d48c8dc97-6mf72                                  1/1     Running     0          23h
gpu-operator-node-feature-discovery-gc-7f546fd4bc-w9rs4       1/1     Running     0          23h
gpu-operator-node-feature-discovery-master-8448c8896c-gnqkm   1/1     Running     0          23h
gpu-operator-node-feature-discovery-worker-cll2k              1/1     Running     0          23h
gpu-operator-node-feature-discovery-worker-cqstj              1/1     Running     0          23h
gpu-operator-node-feature-discovery-worker-gdd8b              1/1     Running     0          23h
gpu-operator-node-feature-discovery-worker-wm9zh              1/1     Running     0          23h
nvidia-container-toolkit-daemonset-4cslh                      1/1     Running     0          107m
nvidia-container-toolkit-daemonset-cvvh5                      1/1     Running     0          114m
nvidia-container-toolkit-daemonset-pqktp                      1/1     Running     0          108m
nvidia-container-toolkit-daemonset-qbhjj                      1/1     Running     0          110m
nvidia-cuda-validator-95kbz                                   0/1     Completed   0          105m
nvidia-cuda-validator-9hxsk                                   0/1     Completed   0          107m
nvidia-cuda-validator-9rrsv                                   0/1     Completed   0          109m
nvidia-cuda-validator-t2wbr                                   0/1     Completed   0          112m
nvidia-dcgm-exporter-g55kg                                    1/1     Running     0          114m
nvidia-dcgm-exporter-jdjzr                                    1/1     Running     0          107m
nvidia-dcgm-exporter-tw5jw                                    1/1     Running     0          110m
nvidia-dcgm-exporter-xxkvn                                    1/1     Running     0          108m
nvidia-device-plugin-daemonset-gdbm9                          1/1     Running     0          108m
nvidia-device-plugin-daemonset-q5g9d                          1/1     Running     0          114m
nvidia-device-plugin-daemonset-r9dms                          1/1     Running     0          110m
nvidia-device-plugin-daemonset-sw9tk                          1/1     Running     0          107m
nvidia-driver-daemonset-2j6n9                                 1/1     Running     0          111m
nvidia-driver-daemonset-9cf22                                 1/1     Running     0          109m
nvidia-driver-daemonset-cn4c6                                 1/1     Running     0          115m
nvidia-driver-daemonset-sl6kt                                 1/1     Running     0          108m
nvidia-mig-manager-59x4g                                      1/1     Running     0          110m
nvidia-mig-manager-5gglj                                      1/1     Running     0          107m
nvidia-mig-manager-gkztg                                      1/1     Running     0          114m
nvidia-mig-manager-x528k                                      1/1     Running     0          108m
nvidia-operator-validator-4p72k                               1/1     Running     0          108m
nvidia-operator-validator-d8rmw                               1/1     Running     0          110m
nvidia-operator-validator-x9gnk                               1/1     Running     0          107m
nvidia-operator-validator-xs66r                               1/1     Running     0          114m

$ kubectl logs nvidia-driver-daemonset-9cf22 -n gpu-operator
Copying imex nodes_config.cfg to /etc/nvidia-imex
Starting NVIDIA imex daemon...

$ ls /run/nvidia/driver/etc/nvidia-imex/
config.cfg        nodes_config.cfg  

$ kubectl exec -it  nvidia-driver-daemonset-2j6n9 -c nvidia-driver-ctr -n gpu-operator -- pgrep -f /usr/bin/nvidia-imex
239395

$ kubectl exec -it  nvidia-driver-daemonset-2j6n9 -c nvidia-driver-ctr -n gpu-operator -- nvidia-imex-ctl -a -q
{
 "nodeStatus": [
  {
   "hostname": "10.x.x.x",
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 1,
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 2,
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 3,
   "message": "READY"
  }
 ]
}

{
 "nodeStatus": [
  {
   "hostname": "10.x.x.x",
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 1,
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 2,
   "message": "READY"
  },
  {
   "hostname": "10.x.x.x",
   "nodeId": 3,
   "message": "READY"
  }
 ]
}

# single node test
$ kubectl get pod
NAME                   READY   STATUS    RESTARTS   AGE
cuda-imex-test-67qsv   1/1     Running   0          3s
cuda-imex-test-6zfzr   1/1     Running   0          3s
cuda-imex-test-bcnhs   1/1     Running   0          3s
cuda-imex-test-mhmc9   1/1     Running   0          3s

$ kubectl logs cuda-imex-test-67qsv
channel0
Fri Nov 15 22:36:55 2024       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 565.57.01              Driver Version: 565.57.01      CUDA Version: 12.7     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GH200 96GB HBM3         On  |   00000009:01:00.0 Off |                    0 |
| N/A   37C    P0             96W /  900W |       1MiB /  97871MiB |      0%      Default |
|                                         |                        |             Disabled |
+-----------------------------------------+------------------------+----------------------+
|   1  NVIDIA GH200 96GB HBM3         On  |   00000019:01:00.0 Off |                    0 |
| N/A   37C    P0             82W /  900W |       1MiB /  97871MiB |      0%      Default |
|                                         |                        |             Disabled |
+-----------------------------------------+------------------------+----------------------+
                                                                                         
+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI        PID   Type   Process name                              GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+
sh: 1: nvidia-modprobe: not found
Dispatcher pid: 1
Running test ipc_mempools_basic (pid: 10)
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
^^^^ PASS: ipc_mempools_basic (2356.6ms)
Total time: 2357ms
1 out of 1 ENABLED tests passed (100%)
&&&& cudaMallocAsync test PASSED

# multi-node test
$ kubectl get pod
NAME                             READY   STATUS             RESTARTS      AGE
mpi-memcpy-test-launcher-ptsqw   0/1     CrashLoopBackOff   1 (11s ago)   13s
mpi-memcpy-test-worker-0         1/1     Running            0             13s
mpi-memcpy-test-worker-1         1/1     Running            0             13s
mpi-memcpy-test-worker-2         1/1     Running            0             13s
mpi-memcpy-test-worker-3         1/1     Running            0             13s

$ kubectl logs mpi-memcpy-test-launcher-ptsqw
Warning: Permanently added '[mpi-memcpy-test-worker-0.mpi-memcpy-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-test-worker-3.mpi-memcpy-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-test-worker-1.mpi-memcpy-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-test-worker-2.mpi-memcpy-test.default.svc]:2222' (ECDSA) to the list of known hosts.
[mpi-memcpy-test-worker-3:00014] MCW rank 7 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-3:00014] MCW rank 6 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-2:00011] MCW rank 4 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-2:00011] MCW rank 5 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-1:00011] MCW rank 3 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-1:00011] MCW rank 2 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-0:00011] MCW rank 0 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-test-worker-0:00011] MCW rank 1 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
 0/ 8 mpi-memcpy-test-worker-0( 0/ 2) nodeid=0x1ddeda8c fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 4/ 8 mpi-memcpy-test-worker-2( 0/ 2) nodeid=0x1ddeda8a fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 2/ 8 mpi-memcpy-test-worker-1( 0/ 2) nodeid=0x1ddeda8b fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 6/ 8 mpi-memcpy-test-worker-3( 0/ 2) nodeid=0x1ddeda89 fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 5/ 8 mpi-memcpy-test-worker-2( 1/ 2) nodeid=0x1ddeda8a fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 3/ 8 mpi-memcpy-test-worker-1( 1/ 2) nodeid=0x1ddeda8b fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 1/ 8 mpi-memcpy-test-worker-0( 1/ 2) nodeid=0x1ddeda8c fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 7/ 8 mpi-memcpy-test-worker-3( 1/ 2) nodeid=0x1ddeda89 fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
cuMemcpyAsync Write:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 395.06 395.04 394.99 394.97 394.99 395.13 395.07 
     1 395.08   0.00 395.04 394.98 395.07 395.01 395.13 394.98 
     2 394.98 395.05   0.00 395.06 395.03 395.11 395.04 394.97 
     3 395.08 395.09 395.02   0.00 395.10 395.02 395.01 395.06 
     4 395.04 394.97 394.95 395.21   0.00 395.05 395.03 395.04 
     5 394.98 395.10 394.98 395.04 394.95   0.00 395.02 395.10 
     6 394.92 395.09 395.08 395.14 395.04 395.01   0.00 394.95 
     7 394.99 394.97 394.97 395.04 395.06 395.05 395.00   0.00 

cuMemcpyAsync Read:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 391.75 391.77 391.75 391.82 391.82 391.80 391.72 
     1 391.72   0.00 391.87 391.69 391.80 391.88 391.77 391.90 
     2 391.70 391.84   0.00 391.77 391.72 391.87 391.75 391.80 
     3 391.75 391.81 391.82   0.00 391.68 391.77 391.67 391.68 
     4 391.76 391.83 391.79 391.77   0.00 391.76 391.90 391.74 
     5 391.81 391.66 391.71 391.80 391.83   0.00 391.83 391.73 
     6 391.74 391.88 391.81 391.73 391.97 391.88   0.00 391.82 
     7 391.74 391.89 391.82 391.72 391.85 391.87 391.76   0.00 

memcpyKernel Write 32b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 158.54 158.39 158.47 158.72 158.87 158.55 158.54 
     1 158.48   0.00 158.43 158.41 158.76 158.86 158.56 158.66 
     2 158.35 158.41   0.00 158.32 158.83 158.62 158.44 158.50 
     3 158.39 158.45 158.24   0.00 158.52 158.65 158.41 158.53 
     4 158.69 158.69 158.68 158.67   0.00 158.98 158.71 158.89 
     5 158.74 158.74 158.67 158.62 158.90   0.00 158.84 158.87 
     6 158.56 158.57 158.40 158.38 158.70 158.91   0.00 158.67 
     7 158.59 158.63 158.47 158.58 158.87 158.92 158.63   0.00 

memcpyKernel Write 32b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 372.82 372.83 372.75 372.46 372.46 372.74 372.70 
     1 373.01   0.00 372.66 372.59 372.58 372.92 372.69 372.84 
     2 372.76 372.93   0.00 372.74 372.42 372.55 372.71 372.62 
     3 372.92 372.78 372.61   0.00 372.76 372.54 372.89 372.66 
     4 372.81 373.08 373.09 372.93   0.00 373.09 373.00 372.95 
     5 373.12 372.90 373.38 372.81 372.74   0.00 373.27 373.19 
     6 372.85 373.00 373.06 372.77 372.98 372.87   0.00 373.26 
     7 372.85 372.51 372.89 372.86 373.19 373.19 373.15   0.00 

memcpyKernel Write 32b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.42 376.51 376.36 376.36 376.40 376.44 376.51 
     1 376.31   0.00 376.31 376.27 376.42 376.37 376.37 376.22 
     2 376.27 376.34   0.00 376.14 376.26 376.30 376.35 376.42 
     3 376.33 376.37 376.47   0.00 376.25 376.33 376.33 376.42 
     4 376.33 376.27 376.41 376.43   0.00 376.22 376.28 376.27 
     5 376.48 376.48 376.47 376.47 376.47   0.00 376.50 376.53 
     6 376.21 376.43 376.19 376.33 376.24 376.21   0.00 376.32 
     7 375.96 376.21 376.22 376.38 376.16 376.19 376.22   0.00 

memcpyKernel Write 64b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 298.05 297.86 297.62 298.72 299.06 297.82 298.39 
     1 298.10   0.00 297.82 297.89 298.80 298.99 298.34 298.57 
     2 297.89 297.91   0.00 297.29 298.68 298.54 297.94 297.98 
     3 297.93 297.89 297.50   0.00 298.34 298.36 297.94 298.15 
     4 298.91 298.92 298.68 298.71   0.00 299.64 299.03 299.23 
     5 298.76 299.03 298.72 298.50 299.61   0.00 298.87 299.20 
     6 298.35 298.09 297.69 297.96 298.92 299.08   0.00 298.49 
     7 298.49 298.41 298.36 298.04 299.22 298.95 298.38   0.00 

memcpyKernel Write 64b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 375.89 375.60 375.85 375.91 375.92 375.96 375.85 
     1 375.94   0.00 375.76 375.67 375.86 375.95 375.98 375.87 
     2 375.83 375.81   0.00 375.74 375.72 375.67 375.64 375.76 
     3 375.78 375.73 375.60   0.00 375.86 376.04 375.85 375.81 
     4 375.97 375.80 376.08 376.11   0.00 376.12 375.75 376.04 
     5 375.90 375.91 375.90 376.00 375.91   0.00 375.91 375.72 
     6 375.86 375.89 376.02 376.08 376.04 375.76   0.00 375.65 
     7 376.01 376.07 375.70 375.84 376.17 376.07 376.02   0.00 

memcpyKernel Write 64b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.31 376.34 376.65 376.33 376.31 376.54 376.40 
     1 376.26   0.00 376.31 376.59 376.24 376.27 376.22 376.16 
     2 376.41 376.44   0.00 376.62 376.05 376.38 376.45 376.23 
     3 376.46 376.22 376.11   0.00 376.54 376.39 376.36 376.52 
     4 376.28 376.34 376.07 376.27   0.00 376.14 376.10 376.29 
     5 376.26 376.21 376.01 376.36 376.14   0.00 376.51 376.40 
     6 376.38 376.20 376.31 376.34 376.29 376.39   0.00 376.16 
     7 376.36 376.23 376.57 376.33 376.56 376.26 376.42   0.00 

memcpyKernel Write 128b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 369.94 370.08 370.22 370.80 370.14 370.20 370.50 
     1 369.80   0.00 370.02 369.57 369.85 369.76 370.10 369.95 
     2 370.16 369.92   0.00 370.20 370.06 370.00 369.70 369.60 
     3 369.38 369.80 369.95   0.00 370.41 369.78 369.66 369.84 
     4 370.46 370.05 370.29 369.76   0.00 370.03 369.79 370.48 
     5 370.52 370.64 370.55 370.31 370.61   0.00 370.34 370.44 
     6 370.26 369.96 370.20 370.17 370.77 370.66   0.00 370.30 
     7 370.41 370.23 370.30 370.42 370.00 370.70 370.72   0.00 

memcpyKernel Write 128b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.62 376.57 376.42 376.65 376.55 376.62 376.52 
     1 376.55   0.00 376.53 376.50 376.56 376.40 376.46 376.40 
     2 376.38 376.59   0.00 376.60 376.51 376.50 376.51 376.54 
     3 376.52 376.54 376.39   0.00 376.58 376.39 376.56 376.57 
     4 376.49 376.32 376.47 376.51   0.00 376.45 376.42 376.41 
     5 376.61 376.55 376.52 376.55 376.63   0.00 376.50 376.59 
     6 376.29 376.26 376.45 376.49 376.45 376.58   0.00 376.53 
     7 376.41 376.41 376.35 376.41 376.66 376.51 376.52   0.00 

memcpyKernel Write 128b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.76 376.78 376.79 376.89 376.80 376.86 376.82 
     1 376.98   0.00 376.81 376.83 376.75 376.85 376.67 376.85 
     2 376.83 376.77   0.00 376.74 376.68 376.63 376.72 376.58 
     3 376.85 376.84 376.79   0.00 376.82 376.74 376.58 376.64 
     4 376.77 376.77 376.72 376.73   0.00 376.73 376.92 376.93 
     5 376.80 376.85 376.92 376.92 376.83   0.00 376.89 376.82 
     6 376.85 376.83 376.96 376.87 376.57 376.86   0.00 376.80 
     7 376.84 376.90 376.77 376.67 376.69 376.77 376.81   0.00 

memcpyKernel Read 32b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 363.44 364.03 363.73 364.36 364.19 364.59 363.51 
     1 363.00   0.00 364.90 364.34 363.80 364.11 364.16 364.66 
     2 363.89 364.34   0.00 364.60 364.15 364.90 364.19 364.45 
     3 364.78 363.83 363.75   0.00 364.16 363.86 364.39 364.33 
     4 363.83 364.90 363.89 364.34   0.00 364.57 363.71 363.62 
     5 365.22 364.85 364.27 364.81 364.83   0.00 364.10 365.31 
     6 364.97 365.69 364.60 364.70 364.97 365.14   0.00 364.42 
     7 364.69 365.38 364.76 364.70 364.16 365.24 364.35   0.00 

memcpyKernel Read 32b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.66 370.32 370.34 370.23 370.60 370.05 369.31 
     1 369.96   0.00 370.06 369.94 369.96 370.55 370.01 369.73 
     2 369.23 369.72   0.00 370.25 370.11 369.96 370.02 370.24 
     3 370.29 370.15 369.98   0.00 370.44 370.37 370.20 369.66 
     4 368.19 367.61 367.69 367.56   0.00 367.75 368.06 367.54 
     5 370.58 370.47 370.26 369.69 370.39   0.00 370.74 370.53 
     6 370.04 369.87 370.11 370.32 370.07 369.84   0.00 370.11 
     7 370.43 369.55 370.30 370.31 369.44 369.94 369.94   0.00 

memcpyKernel Read 32b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 372.01 372.00 372.02 372.23 371.83 372.03 371.81 
     1 371.72   0.00 371.31 371.24 371.34 371.41 370.91 371.20 
     2 371.26 371.49   0.00 371.43 371.19 371.71 371.38 371.36 
     3 371.55 371.52 371.84   0.00 371.62 371.20 371.36 371.32 
     4 370.32 370.62 370.56 370.57   0.00 370.25 370.40 370.10 
     5 371.54 371.40 371.55 371.34 371.00   0.00 371.54 371.39 
     6 371.73 372.32 371.56 371.76 371.81 372.00   0.00 372.16 
     7 371.86 371.87 371.37 371.78 372.00 371.75 371.47   0.00 

memcpyKernel Read 64b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 368.14 368.15 368.17 368.75 367.93 368.78 368.67 
     1 367.91   0.00 368.45 368.49 368.72 368.19 368.15 367.98 
     2 368.16 367.60   0.00 368.43 368.25 368.48 368.08 368.37 
     3 367.96 368.64 368.50   0.00 368.65 368.29 368.42 368.31 
     4 367.42 367.73 367.39 367.25   0.00 367.22 367.65 368.01 
     5 369.01 368.82 368.57 368.65 368.87   0.00 368.70 368.86 
     6 368.49 368.14 368.86 368.52 368.44 368.97   0.00 368.25 
     7 367.89 368.86 368.77 368.41 368.08 368.17 368.18   0.00 

memcpyKernel Read 64b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 368.76 368.38 368.57 368.45 368.09 368.92 368.59 
     1 366.74   0.00 366.48 366.78 366.26 366.86 366.61 366.41 
     2 366.48 366.30   0.00 366.84 366.51 366.52 366.10 366.92 
     3 366.52 366.85 366.61   0.00 366.38 366.57 366.56 366.54 
     4 365.76 366.10 365.27 365.21   0.00 365.63 365.67 365.90 
     5 366.75 366.98 366.57 366.66 366.54   0.00 366.81 366.54 
     6 366.72 366.71 367.21 366.70 366.44 367.04   0.00 366.85 
     7 366.64 366.66 366.48 366.86 367.12 366.99 366.53   0.00 

memcpyKernel Read 64b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.02 370.19 370.06 370.16 370.17 370.02 369.46 
     1 369.99   0.00 369.83 369.77 369.95 369.93 369.58 370.00 
     2 370.06 369.87   0.00 369.62 370.21 369.99 370.00 369.88 
     3 369.66 369.73 369.85   0.00 369.73 369.65 369.65 370.02 
     4 369.66 369.52 369.70 369.50   0.00 369.54 369.74 369.43 
     5 369.77 369.50 369.37 369.57 369.93   0.00 369.83 369.42 
     6 369.42 369.74 369.84 369.83 369.41 370.14   0.00 369.82 
     7 369.89 369.71 369.81 369.42 369.64 369.72 369.72   0.00 

memcpyKernel Read 128b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 369.17 368.86 369.24 369.06 368.73 369.00 368.51 
     1 368.87   0.00 368.31 369.04 368.46 368.76 368.40 368.34 
     2 369.13 369.10   0.00 368.36 368.72 369.09 368.73 369.01 
     3 368.60 368.69 368.40   0.00 368.73 368.90 368.79 369.15 
     4 366.70 366.67 366.97 366.42   0.00 366.81 366.40 367.07 
     5 368.87 369.34 368.79 369.53 368.83   0.00 369.08 368.82 
     6 369.23 368.95 369.02 368.56 369.11 368.90   0.00 368.96 
     7 368.45 369.40 368.40 368.72 368.70 368.77 368.77   0.00 

memcpyKernel Read 128b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.30 370.48 369.69 370.17 370.24 369.97 370.12 
     1 369.64   0.00 369.70 369.85 369.64 369.54 369.50 369.64 
     2 369.58 369.41   0.00 369.80 369.75 369.82 369.48 369.67 
     3 369.57 369.83 369.57   0.00 369.63 369.68 369.78 369.47 
     4 369.15 368.81 369.26 369.12   0.00 369.09 368.92 368.85 
     5 369.58 369.86 369.77 369.82 369.89   0.00 369.72 369.47 
     6 369.94 369.51 369.66 369.96 369.81 369.95   0.00 369.82 
     7 370.00 369.60 370.00 369.63 369.85 369.79 369.64   0.00 

memcpyKernel Read 128b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.76 370.66 370.82 370.75 370.95 370.86 370.75 
     1 370.92   0.00 370.90 370.82 370.55 370.62 370.89 370.59 
     2 370.61 370.96   0.00 370.65 370.39 370.49 370.41 370.69 
     3 370.74 370.51 370.74   0.00 370.69 370.70 370.81 370.74 
     4 370.66 370.65 370.73 370.45   0.00 370.48 370.58 370.56 
     5 370.39 370.50 370.84 370.66 370.62   0.00 371.00 370.82 
     6 370.79 370.82 370.81 370.69 370.94 370.70   0.00 370.69 
     7 370.71 370.80 370.63 370.92 370.63 370.75 370.61   0.00 

PASS

@guptaNswati
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Test 2 DRA mode by setting hostNetwork: true for driver container and --set nvidiaCtkPath=/usr/local/nvidia/toolkit/nvidia-ctk --set nvidiaDriverRoot=/run/nvidia/driver

$ kubectl get pod -n gpu-operator
NAME                                                          READY   STATUS      RESTARTS   AGE
gpu-feature-discovery-dlvcg                                   1/1     Running     0          12m
gpu-feature-discovery-rm9xl                                   1/1     Running     0          14m
gpu-feature-discovery-wf7f7                                   1/1     Running     0          14m
gpu-feature-discovery-xz2kp                                   1/1     Running     0          13m
gpu-operator-d48c8dc97-svngp                                  1/1     Running     0          47h
gpu-operator-node-feature-discovery-gc-7f546fd4bc-66zwx       1/1     Running     0          47h
gpu-operator-node-feature-discovery-master-8448c8896c-8f5tb   1/1     Running     0          47h
gpu-operator-node-feature-discovery-worker-9q9lw              1/1     Running     0          47h
gpu-operator-node-feature-discovery-worker-sp9fb              1/1     Running     0          47h
gpu-operator-node-feature-discovery-worker-x2428              1/1     Running     0          47h
gpu-operator-node-feature-discovery-worker-z4cw5              1/1     Running     0          47h
nvidia-container-toolkit-daemonset-d758n                      1/1     Running     0          14m
nvidia-container-toolkit-daemonset-dlcdw                      1/1     Running     0          12m
nvidia-container-toolkit-daemonset-f76jc                      1/1     Running     0          13m
nvidia-container-toolkit-daemonset-hbbz7                      1/1     Running     0          14m
nvidia-cuda-validator-hjb46                                   0/1     Completed   0          13m
nvidia-cuda-validator-lp8lx                                   0/1     Completed   0          12m
nvidia-cuda-validator-phz82                                   0/1     Completed   0          11m
nvidia-cuda-validator-zhnq4                                   0/1     Completed   0          11m
nvidia-dcgm-exporter-2xfkw                                    1/1     Running     0          14m
nvidia-dcgm-exporter-9f5g5                                    1/1     Running     0          14m
nvidia-dcgm-exporter-jj245                                    1/1     Running     0          12m
nvidia-dcgm-exporter-kgmdd                                    1/1     Running     0          13m
nvidia-device-plugin-daemonset-hg699                          1/1     Running     0          13m
nvidia-device-plugin-daemonset-kpgz8                          1/1     Running     0          14m
nvidia-device-plugin-daemonset-tfljw                          1/1     Running     0          14m
nvidia-device-plugin-daemonset-zgdsm                          1/1     Running     0          12m
nvidia-driver-daemonset-6jrgh                                 1/1     Running     0          16m
nvidia-driver-daemonset-7fkdx                                 1/1     Running     0          13m
nvidia-driver-daemonset-plp7g                                 1/1     Running     0          15m
nvidia-driver-daemonset-vwwgt                                 1/1     Running     0          14m
nvidia-mig-manager-49d9d                                      1/1     Running     0          13m
nvidia-mig-manager-5v4fr                                      1/1     Running     0          14m
nvidia-mig-manager-8dv98                                      1/1     Running     0          12m
nvidia-mig-manager-bvjsr                                      1/1     Running     0          14m
nvidia-operator-validator-mldmw                               1/1     Running     0          14m
nvidia-operator-validator-nq5vr                               1/1     Running     0          12m
nvidia-operator-validator-tn4q5                               1/1     Running     0          13m
nvidia-operator-validator-wcpjv                               1/1     Running     0          14m

$ kubectl logs nvidia-driver-daemonset-6jrgh -n gpu-operator
Copying imex nodes_config.cfg to /etc/nvidia-imex
Starting NVIDIA imex daemon...
Mounting NVIDIA driver rootfs...
Done, now waiting for signal

$ kubectl exec -it  nvidia-driver-daemonset-6jrgh  -c nvidia-driver-ctr -n gpu-operator -- cat /var/log/nvidia-imex.log
IMEX_WAIT_FOR_QUORUM != FULL, continuing initialization without waiting for connections to all nodes.
GPU event successfully subscribed

$ kubectl get pod -n nvidia-dra-driver 
NAME                                                           READY   STATUS    RESTARTS   AGE
nvidia-dra-driver-k8s-dra-driver-controller-7f78c745f6-x8lt8   1/1     Running   0          8m23s
nvidia-dra-driver-k8s-dra-driver-kubelet-plugin-6fbvf          1/1     Running   0          8m23s
nvidia-dra-driver-k8s-dra-driver-kubelet-plugin-ccvlh          1/1     Running   0          8m23s
nvidia-dra-driver-k8s-dra-driver-kubelet-plugin-jcjkh          1/1     Running   0          8m23s
nvidia-dra-driver-k8s-dra-driver-kubelet-plugin-z4xqm          1/1     Running   0          8m23s

$ cat imex-dra-test-pod.yaml
---
apiVersion: resource.k8s.io/v1alpha3
kind: ResourceClaim
metadata:
  name: imex-dra-test-pod-channel
spec:
  devices:
    requests:
    - name: channel
      deviceClassName: imex.nvidia.com
---
apiVersion: v1
kind: Pod
metadata:
  name: imex-dra-test
spec:
  containers:
  - name: ctr
    image: ubuntu:22.04
    command: ["bash", "-c"]
    args: ["ls -la /dev/nvidia-caps-imex-channels; trap 'exit 0' TERM; sleep 9999 & wait"]
    resources:
      claims:
      - name: imex-channel
  resourceClaims:
  - name: imex-channel
    resourceClaimName: imex-dra-test-pod-channel
    
$ kubectl logs imex-dra-test
total 0
drwxr-xr-x 2 root root     60 Nov 20 23:55 .
drwxr-xr-x 6 root root    380 Nov 20 23:55 ..
crw-rw-rw- 1 root root 506, 0 Nov 20 23:55 channel0

# mpi_memcpy test
$ kubectl logs mpi-memcpy-dra-test-launcher-fg9lf -f
Warning: Permanently added '[mpi-memcpy-dra-test-worker-3.mpi-memcpy-dra-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-dra-test-worker-1.mpi-memcpy-dra-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-dra-test-worker-2.mpi-memcpy-dra-test.default.svc]:2222' (ECDSA) to the list of known hosts.
Warning: Permanently added '[mpi-memcpy-dra-test-worker-0.mpi-memcpy-dra-test.default.svc]:2222' (ECDSA) to the list of known hosts.
[mpi-memcpy-dra-test-worker-0:00013] MCW rank 0 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-0:00013] MCW rank 1 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-1:00011] MCW rank 2 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-1:00011] MCW rank 3 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-2:00017] MCW rank 5 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-2:00017] MCW rank 4 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-3:00017] MCW rank 6 bound to socket 0[core 0[hwt 0]]: [B/././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
[mpi-memcpy-dra-test-worker-3:00017] MCW rank 7 bound to socket 0[core 1[hwt 0]]: [./B/./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.][./././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././././.]
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
sh: 1: nvidia-modprobe: not found
 0/ 8 mpi-memcpy-dra-test-worker-0( 0/ 2) nodeid=0xc4cab78 fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 2/ 8 mpi-memcpy-dra-test-worker-1( 0/ 2) nodeid=0xc4cab79 fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 6/ 8 mpi-memcpy-dra-test-worker-3( 0/ 2) nodeid=0xc4cab7b fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 4/ 8 mpi-memcpy-dra-test-worker-2( 0/ 2) nodeid=0xc4cab7a fabric=1 Device  0 102GB 132SMs Compute  9.0 PCIE-01:00.09
 5/ 8 mpi-memcpy-dra-test-worker-2( 1/ 2) nodeid=0xc4cab7a fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 1/ 8 mpi-memcpy-dra-test-worker-0( 1/ 2) nodeid=0xc4cab78 fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 3/ 8 mpi-memcpy-dra-test-worker-1( 1/ 2) nodeid=0xc4cab79 fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
 7/ 8 mpi-memcpy-dra-test-worker-3( 1/ 2) nodeid=0xc4cab7b fabric=1 Device  1 102GB 132SMs Compute  9.0 PCIE-01:00.19
cuMemcpyAsync Write:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 395.13 395.08 395.05 395.02 395.08 395.11 395.04 
     1 395.05   0.00 394.98 395.03 394.99 395.09 395.01 395.02 
     2 394.98 395.03   0.00 395.05 394.99 394.99 394.98 395.05 
     3 395.00 394.95 395.12   0.00 394.97 395.01 395.04 395.07 
     4 394.95 394.95 395.12 395.12   0.00 394.98 395.07 395.08 
     5 395.02 395.09 395.11 395.14 395.07   0.00 395.01 395.10 
     6 395.03 395.04 395.07 395.04 395.05 395.08   0.00 395.06 
     7 395.00 395.02 395.06 395.08 395.01 395.12 395.07   0.00 

cuMemcpyAsync Read:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 391.83 391.74 391.88 391.69 391.94 391.80 391.77 
     1 391.82   0.00 391.76 391.82 391.82 391.75 391.76 391.79 
     2 391.86 391.84   0.00 391.72 391.78 391.79 391.77 391.78 
     3 391.75 391.85 391.66   0.00 391.74 391.69 391.74 391.80 
     4 391.80 391.84 391.79 391.88   0.00 391.82 391.80 391.65 
     5 391.77 391.82 391.69 391.85 391.76   0.00 391.72 391.81 
     6 391.77 391.75 391.71 391.80 391.72 391.74   0.00 391.75 
     7 391.71 391.77 391.61 391.67 391.73 391.82 391.79   0.00 

memcpyKernel Write 32b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 159.02 158.81 158.86 158.75 158.76 158.58 158.68 
     1 158.97   0.00 158.87 158.99 158.81 158.86 158.68 158.58 
     2 158.73 158.85   0.00 158.76 158.45 158.52 158.33 158.49 
     3 158.85 158.81 158.61   0.00 158.60 158.65 158.52 158.57 
     4 158.80 158.94 158.44 158.69   0.00 158.58 158.27 158.46 
     5 158.72 158.74 158.49 158.60 158.57   0.00 158.32 158.41 
     6 158.54 158.60 158.49 158.37 158.31 158.36   0.00 158.26 
     7 158.74 158.56 158.42 158.51 158.49 158.41 158.23   0.00 

memcpyKernel Write 32b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 373.05 372.56 372.67 372.97 372.26 372.80 373.14 
     1 373.28   0.00 373.43 373.32 373.24 373.39 373.51 373.05 
     2 373.13 373.29   0.00 373.02 372.47 373.04 373.16 373.28 
     3 372.86 372.74 372.69   0.00 373.18 373.12 373.03 372.66 
     4 372.89 372.74 372.85 372.37   0.00 372.88 372.52 372.62 
     5 373.17 373.17 372.88 372.82 373.17   0.00 373.13 373.03 
     6 372.90 372.86 372.80 373.03 373.12 372.78   0.00 372.67 
     7 373.03 372.80 372.61 372.97 372.68 372.70 372.74   0.00 

memcpyKernel Write 32b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.34 376.34 376.29 376.27 376.28 376.26 376.47 
     1 376.46   0.00 376.46 376.57 376.43 376.42 376.46 376.46 
     2 376.49 376.29   0.00 376.34 376.33 376.34 376.34 376.26 
     3 376.34 376.29 376.27   0.00 376.31 376.29 376.29 376.30 
     4 376.16 376.24 376.30 376.51   0.00 376.25 376.30 376.46 
     5 376.29 376.28 376.31 376.19 376.05   0.00 376.34 376.20 
     6 376.25 376.43 376.33 376.26 376.21 376.26   0.00 376.19 
     7 376.24 376.36 376.19 376.42 376.24 376.24 376.42   0.00 

memcpyKernel Write 64b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 299.76 299.10 299.20 299.08 299.06 298.72 298.53 
     1 299.61   0.00 299.22 299.10 299.06 298.83 298.59 298.58 
     2 298.66 299.06   0.00 298.42 298.14 298.37 297.97 297.90 
     3 299.25 299.19 298.66   0.00 298.43 298.52 298.33 298.10 
     4 298.83 298.92 297.96 298.53   0.00 298.08 297.80 297.76 
     5 298.73 298.90 298.30 298.37 298.09   0.00 297.88 297.76 
     6 298.60 298.67 297.93 298.05 297.87 297.90   0.00 297.29 
     7 298.38 298.37 297.88 297.86 297.72 297.74 297.66   0.00 

memcpyKernel Write 64b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.03 376.08 376.07 375.98 376.04 376.24 376.15 
     1 375.95   0.00 375.82 375.92 376.13 375.73 375.85 376.04 
     2 376.00 376.06   0.00 376.22 376.01 375.84 376.08 376.17 
     3 375.91 376.21 375.91   0.00 376.09 376.07 376.13 376.06 
     4 375.94 375.74 375.71 375.58   0.00 375.93 375.88 375.73 
     5 375.70 375.98 375.98 375.95 375.94   0.00 376.14 375.94 
     6 375.96 375.61 376.00 375.63 376.06 376.11   0.00 376.12 
     7 375.67 375.66 375.77 375.92 375.70 375.55 375.96   0.00 

memcpyKernel Write 64b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.32 375.96 376.18 376.07 376.05 376.05 375.78 
     1 376.29   0.00 376.33 376.29 376.15 376.32 376.37 376.43 
     2 376.48 376.31   0.00 376.33 376.40 376.26 376.24 376.29 
     3 376.34 375.93 376.32   0.00 376.29 376.14 376.30 376.31 
     4 376.39 376.16 376.30 376.41   0.00 376.33 376.56 376.52 
     5 376.22 376.54 376.09 376.37 376.32   0.00 376.40 376.19 
     6 376.16 376.27 376.26 375.96 376.29 376.37   0.00 376.30 
     7 376.50 376.38 376.30 376.36 376.25 376.62 376.52   0.00 

memcpyKernel Write 128b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 369.83 369.92 370.08 369.91 370.59 369.89 369.85 
     1 370.46   0.00 370.83 370.02 369.72 370.26 370.25 370.02 
     2 370.02 370.19   0.00 370.36 370.25 370.39 370.54 370.41 
     3 370.15 369.96 370.22   0.00 370.11 370.31 370.02 370.08 
     4 370.34 370.04 370.35 370.02   0.00 370.14 369.48 370.49 
     5 370.66 370.27 370.40 370.27 370.18   0.00 370.85 370.01 
     6 370.36 370.68 370.17 370.16 369.78 370.13   0.00 370.58 
     7 370.36 369.81 370.31 370.17 369.35 369.77 370.01   0.00 

memcpyKernel Write 128b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.28 376.56 376.45 376.36 376.50 376.33 376.49 
     1 376.61   0.00 376.70 376.65 376.55 376.52 376.48 376.59 
     2 376.55 376.39   0.00 376.49 376.26 376.39 376.44 376.41 
     3 376.57 376.46 376.47   0.00 376.48 376.52 376.56 376.42 
     4 376.49 376.52 376.63 376.52   0.00 376.50 376.53 376.52 
     5 376.26 376.42 376.55 376.21 376.56   0.00 376.25 376.43 
     6 376.37 376.49 376.29 376.39 376.53 376.49   0.00 376.40 
     7 376.51 376.74 376.70 376.61 376.57 376.34 376.37   0.00 

memcpyKernel Write 128b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 376.80 376.81 376.95 376.77 376.87 376.86 376.84 
     1 376.76   0.00 376.96 376.83 376.84 376.83 376.96 376.85 
     2 376.80 376.85   0.00 376.68 376.92 376.57 376.69 376.64 
     3 376.71 376.72 376.82   0.00 376.72 376.88 376.83 376.67 
     4 376.79 376.90 376.92 376.83   0.00 376.80 376.67 376.88 
     5 376.87 376.82 376.81 376.86 376.85   0.00 376.72 376.78 
     6 376.93 376.85 376.73 376.81 376.83 376.82   0.00 376.76 
     7 376.79 376.80 376.89 376.81 376.74 376.91 376.72   0.00 

memcpyKernel Read 32b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 363.50 364.51 364.33 364.57 364.48 364.07 363.77 
     1 364.42   0.00 365.13 364.78 362.33 364.25 365.44 365.96 
     2 365.06 364.62   0.00 364.30 364.51 363.79 365.03 364.67 
     3 363.79 364.19 363.50   0.00 364.57 364.49 363.78 363.80 
     4 363.08 363.88 364.13 364.96   0.00 363.65 364.01 364.31 
     5 363.33 364.87 364.40 365.38 364.90   0.00 364.64 364.49 
     6 363.89 364.69 363.77 364.28 364.52 364.59   0.00 365.11 
     7 363.76 363.87 364.46 363.67 364.38 363.01 364.87   0.00 

memcpyKernel Read 32b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 368.19 367.85 367.73 368.03 367.78 367.63 367.88 
     1 369.81   0.00 369.93 369.57 370.88 369.95 370.11 369.91 
     2 369.84 369.94   0.00 370.33 370.61 370.11 370.14 369.64 
     3 367.58 367.49 367.50   0.00 367.19 367.00 367.55 367.85 
     4 370.23 370.22 370.59 370.95   0.00 370.11 370.54 370.43 
     5 370.03 370.26 369.87 369.94 370.33   0.00 370.09 370.05 
     6 367.60 367.28 368.27 367.81 367.45 367.87   0.00 368.06 
     7 369.89 370.39 370.04 370.16 370.17 370.19 369.80   0.00 

memcpyKernel Read 32b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.90 370.56 370.68 370.57 370.16 370.36 370.61 
     1 371.36   0.00 371.19 370.99 371.34 371.38 371.24 371.15 
     2 371.90 371.52   0.00 371.88 371.89 371.98 372.00 371.62 
     3 370.51 371.05 370.82   0.00 370.63 370.81 370.78 370.49 
     4 372.26 372.59 372.23 372.22   0.00 371.86 371.95 372.33 
     5 371.90 372.04 371.52 372.00 371.80   0.00 371.66 372.00 
     6 370.63 370.77 370.44 370.61 370.25 370.72   0.00 370.71 
     7 371.93 372.20 372.21 372.48 372.23 371.72 372.31   0.00 

memcpyKernel Read 64b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 367.61 368.01 367.56 367.76 367.90 367.41 367.99 
     1 369.00   0.00 369.29 369.01 369.04 369.14 369.00 368.68 
     2 368.87 368.09   0.00 368.71 368.67 367.84 368.22 367.58 
     3 368.44 367.84 368.00   0.00 367.71 367.68 367.40 368.05 
     4 368.32 368.83 368.79 368.60   0.00 368.38 368.36 368.26 
     5 368.98 368.07 368.52 368.23 368.40   0.00 368.50 368.01 
     6 367.75 367.84 367.77 367.82 367.71 367.73   0.00 367.76 
     7 367.37 368.84 368.78 368.86 368.77 368.49 368.67   0.00 

memcpyKernel Read 64b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 365.96 365.88 365.86 365.67 365.89 365.62 365.52 
     1 366.76   0.00 367.07 366.51 366.96 366.87 366.81 366.41 
     2 367.05 366.71   0.00 366.71 366.52 366.85 366.93 366.84 
     3 365.98 366.07 365.86   0.00 365.97 365.74 365.64 365.45 
     4 368.31 368.29 368.61 368.66   0.00 368.64 368.28 368.82 
     5 366.52 366.64 366.78 366.56 366.65   0.00 366.57 366.61 
     6 365.49 365.17 365.60 365.39 365.97 365.92   0.00 365.50 
     7 368.70 368.31 368.32 368.34 368.56 368.72 368.71   0.00 

memcpyKernel Read 64b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 369.89 369.67 369.80 369.72 369.44 369.44 369.70 
     1 370.08   0.00 369.54 369.71 369.76 369.31 369.78 369.70 
     2 369.79 369.81   0.00 370.15 369.68 369.89 369.96 370.07 
     3 369.73 369.56 369.68   0.00 369.51 369.73 369.81 369.81 
     4 370.00 369.95 369.80 369.75   0.00 369.65 370.09 370.10 
     5 369.62 369.76 369.81 369.50 369.98   0.00 369.85 369.63 
     6 369.37 369.41 369.39 369.63 369.46 369.49   0.00 369.73 
     7 370.16 369.89 369.77 369.77 369.99 370.08 370.16   0.00 

memcpyKernel Read 128b stride 32 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 367.22 366.71 367.05 366.37 367.02 366.87 367.14 
     1 368.65   0.00 368.62 369.09 368.80 368.60 369.26 369.12 
     2 368.54 368.76   0.00 369.00 368.88 368.40 369.01 368.72 
     3 366.98 366.61 367.06   0.00 366.34 366.78 367.30 367.15 
     4 368.92 369.00 369.15 369.11   0.00 369.20 368.99 368.92 
     5 369.09 368.59 368.59 368.38 368.42   0.00 368.59 368.80 
     6 366.94 367.17 366.94 366.93 366.89 366.67   0.00 366.43 
     7 369.04 369.27 369.33 368.63 369.11 369.09 368.70   0.00 

memcpyKernel Read 128b stride 128 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 368.90 369.14 368.94 369.06 369.06 369.11 369.00 
     1 369.59   0.00 369.74 369.71 369.49 369.79 369.56 369.79 
     2 369.84 370.01   0.00 369.74 370.13 369.92 369.92 370.09 
     3 368.96 369.05 368.90   0.00 369.21 369.22 369.28 369.03 
     4 370.07 370.16 370.01 370.63   0.00 369.96 370.24 370.23 
     5 369.87 369.72 369.91 370.11 369.76   0.00 369.97 369.99 
     6 369.11 369.14 369.01 368.85 368.86 369.37   0.00 369.32 
     7 369.98 370.12 370.06 370.33 369.98 370.21 370.34   0.00 

memcpyKernel Read 128b stride 512 threads/SM:

Measured bandwidth in GB/s of size 512 MiB:
            0      1      2      3      4      5      6      7 
--------------------------------------------------------------
     0   0.00 370.90 370.39 370.69 370.73 370.63 370.70 370.71 
     1 370.83   0.00 370.83 370.67 370.78 370.78 370.77 370.90 
     2 370.94 370.71   0.00 370.79 370.75 370.81 370.68 370.69 
     3 370.66 370.73 370.91   0.00 370.49 371.00 370.48 370.66 
     4 370.69 370.79 370.61 370.83   0.00 370.64 370.95 370.66 
     5 370.78 370.76 370.60 370.71 371.00   0.00 370.77 370.86 
     6 370.50 370.91 370.84 370.38 370.56 370.67   0.00 370.66 
     7 370.78 370.78 370.53 370.59 370.75 370.72 370.76   0.00 

PASS

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@guptaNswati @tariq1890