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coll/barrier: fix op undercount and buffer overflow for non-power-of-two #67

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Jan 26, 2024
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coll/barrier: fix op undercount and buffer overflow for non-power-of-two #67

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4 changes: 2 additions & 2 deletions lci/experimental/coll/barrier.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,8 @@ LCI_error_t LCIX_barrier(LCI_endpoint_t ep, LCI_tag_t tag,
return LCI_OK;
}

/* We have at most 2 * ilog2(size) scheduled operations */
sched_ops = 2 * ilog2(size);
/* We have at most 2 * (1 + ilog2(size)) scheduled operations */
sched_ops = 2 * (1 + ilog2(size));

LCIX_collective_t coll = LCIU_malloc(sizeof(struct LCIX_collective_s));
LCIXC_mcoll_init(coll, ep, tag, NULL, completion, user_context, empty,
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