update README

RapidsAtHKUST · Apr 7, 2022 · e2f6b61 · e2f6b61
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diff --git a/README.md b/README.md
@@ -49,6 +49,14 @@ void GSV_close();
 
 `GSV_close()` frees GPU memory.
 
+## Configuration
+
+Configurable flags in `gsv_wrapper.h`:
+
+- `GSV_TPI`: Threads per instance, a parameter of the CGBN library. Can be set to 4, 8, 16, or 32. Default value is 16.
+- `GSV_256BIT`: Enable this flag to use 256-bit integers for calculation rather than 512-bit integers. Will save space but a bit slower.
+- `GSV_KNOWN_PKEY`: When the public key of a batch of signatures are the same, use a precomputed table to speed up verification. Need to generate different `sm2_pkey_512.table` for different keys.
+
 ## Acknowledgement
 
 This project used the [CGBN](https://github.com/NVlabs/CGBN) library.
diff --git a/src/README.md b/src/README.md