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fix(rccl): Fix SDMA Collectives build failure after Sync #11765

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Merged
Kapil-Shyam-Pawar merged 5 commits into from
Sep 18, 2026
Merged

fix(rccl): Fix SDMA Collectives build failure after Sync #11765

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b212014
Fix build failure
Kapil-Shyam-Pawar Sep 17, 2026
25e5065
Update gin type for broadcast
Kapil-Shyam-Pawar Sep 17, 2026
4a8d2cd
Update test
Kapil-Shyam-Pawar Sep 17, 2026
77063ae
Fix test build failure and update config
Kapil-Shyam-Pawar Sep 17, 2026
fc041d8
Update config
Kapil-Shyam-Pawar Sep 18, 2026
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7 changes: 5 additions & 2 deletions projects/rccl/src/algorithms/gin/sdma/gin_all_reduce_sdma.cu
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Expand Up @@ -67,7 +67,8 @@ static ncclResult_t ncclGinAllReduceInitOnce(ncclComm* comm) {
reqs.barrierCount = kGinAllReduceLsaCtas;
reqs.ginSignalCount = kGinAllReduceLsaCtas;
reqs.ginConnectionType = NCCL_GIN_CONNECTION_FULL;
NCCLCHECK(ncclDevrCommCreateInternal(comm, &reqs, &state->devComm, /*isInternal=*/true));
NCCLCHECK(ncclDevrCommCreateInternal(comm, &reqs, &state->devComm, /*isInternal=*/true,
/*deviceCodeVersion=*/NCCL_VERSION_CODE));
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state->initialized = true;
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// Two words (arrived, sense) for ginIntraGpuCtaBarrier. ncclCudaCalloc is capture-safe
Expand Down Expand Up @@ -231,7 +232,9 @@ static bool ginAllReduceBaseEligible(ncclComm* comm, const void* sendbuff, void*
if (comm->nNodes != 1) return false;
if (comm->nRanks > kGinAllReduceMaxRanks) return false;
if (comm->sharedRes == nullptr) return false;
if (comm->sharedRes->ginState.ginType != (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA) return false;
ncclGinType_t ginType = NCCL_GIN_TYPE_NONE;
if (ncclGetGinType(comm, &ginType) != ncclSuccess) return false;
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if (ginType != (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA) return false;
// After cheaper ginType: ncclTeamLsa() can initialize the device runtime.
if (ncclTeamLsa(comm).nRanks != comm->nRanks) return false;
return true;
Expand Down
7 changes: 5 additions & 2 deletions projects/rccl/src/algorithms/gin/sdma/gin_alltoall_sdma.cu
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Expand Up @@ -158,7 +158,8 @@ ncclResult_t ncclGinA2AInitOnce(ncclComm* comm) {
reqs.ginSignalCount = kGinA2AMaxCtas;
reqs.barrierCount = kGinA2ASdmaCtas;
reqs.ginConnectionType = NCCL_GIN_CONNECTION_FULL;
NCCLCHECK(ncclDevrCommCreateInternal(comm, &reqs, &state->devComm, /*isInternal=*/true));
NCCLCHECK(ncclDevrCommCreateInternal(comm, &reqs, &state->devComm, /*isInternal=*/true,
/*deviceCodeVersion=*/NCCL_VERSION_CODE));
state->initialized = true;
}
return ncclSuccess;
Expand All @@ -181,7 +182,9 @@ bool ncclAllToAllGinSdmaEligible(ncclComm* comm, const void* sendbuff, void* rec
if (comm->globalGinSupport != NCCL_GIN_CONNECTION_FULL) return false;

// This path runs on the comm's shared GIN backend, so it has to be SDMA.
if (comm->sharedRes->ginState.ginType != (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA) return false;
ncclGinType_t ginType = NCCL_GIN_TYPE_NONE;
if (ncclGetGinType(comm, &ginType) != ncclSuccess) return false;
if (ginType != (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA) return false;
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// Every rank must be reachable over LSA.
if (ncclTeamLsa(comm).nRanks != comm->nRanks) return false;
Expand Down
9 changes: 5 additions & 4 deletions projects/rccl/test/GinAlltoAllEligibilityTests.cpp
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Expand Up @@ -44,8 +44,9 @@ struct GinAlltoAllMockComm
comm.devrState.lsaSize = comm.nRanks;
comm.devrState.lsaSelf = comm.rank;

sharedRes.ginState.ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA;
comm.sharedRes = &sharedRes;
sharedRes.ginState.numActiveBackends = 1;
sharedRes.ginState.backends[0].ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_ANVIL_SDMA;
comm.sharedRes = &sharedRes;
}

ncclComm* get() { return &comm; }
Expand Down Expand Up @@ -146,10 +147,10 @@ TEST_F(GinAlltoAllEligibilityTest, LsaTeamSmallerThanComm)
// other backend must not be claimed.
TEST_F(GinAlltoAllEligibilityTest, WrongGinBackend)
{
mockComm_.sharedRes.ginState.ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_ROCSHMEM_GDA;
mockComm_.sharedRes.ginState.backends[0].ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_ROCSHMEM_GDA;
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EXPECT_FALSE(eligible(kCount));

mockComm_.sharedRes.ginState.ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_PROXY;
mockComm_.sharedRes.ginState.backends[0].ginType = (ncclGinType_t)NCCL_NET_DEVICE_GIN_PROXY;
EXPECT_FALSE(eligible(kCount));
}

Expand Down
13 changes: 10 additions & 3 deletions projects/rccl/tools/ci/lib/gin-tests.json
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Expand Up @@ -44,7 +44,7 @@
"name": "rccl-gin-rocshmem-sdma-bcast-d3",
"kind": "rccl-tests",
"bin": "broadcast_perf",
"env": ["NCCL_CUMEM_ENABLE=1", "RCCL_ENABLE_INTRANET=1", "NCCL_DMABUF_ENABLE=1", "HSA_NO_SCRATCH_RECLAIM=1", "NCCL_MSCCL_ENABLE=0", "NCCL_GIN_ENABLE=1", "NCCL_GIN_TYPE=6"],
"env": ["NCCL_CUMEM_ENABLE=1", "RCCL_ENABLE_INTRANET=1", "NCCL_DMABUF_ENABLE=1", "HSA_NO_SCRATCH_RECLAIM=1", "NCCL_MSCCL_ENABLE=0", "NCCL_GIN_ENABLE=1", "NCCL_GIN_TYPE=7"],
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"args": "-b 128 -e {E} -f 2 -g 1 -R 2 -D 3 -A 1"
},
{
Expand All @@ -69,11 +69,18 @@
"args": "--gtest_filter=GinRocshmemGdaTemplateTest.*:GinAnvilSdmaTemplateTest.*:GinAnvilIpcDeviceTest.*"
},
{
"name": "rccl-gin-rocshmem-sdma-internal",
"name": "rccl-gin-rocshmem-sdma-alltoall-internal",
"kind": "rccl-tests",
"bin": "alltoall_perf",
"env": ["NCCL_CUMEM_ENABLE=1", "NCCL_DMABUF_ENABLE=1", "HSA_NO_SCRATCH_RECLAIM=1", "NCCL_GIN_ENABLE=1", "NCCL_GIN_TYPE=6"],
"env": ["NCCL_CUMEM_ENABLE=1", "NCCL_DMABUF_ENABLE=1", "HSA_NO_SCRATCH_RECLAIM=1", "NCCL_GIN_ENABLE=1", "NCCL_GIN_TYPE=7"],
"args": "-b 128 -e {E} -f 2 -g 1 -R 2"
},
{
"name": "rccl-gin-rocshmem-sdma-allreduce-internal",
"kind": "rccl-tests",
"bin": "all_reduce_perf",
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"env": ["NCCL_CUMEM_ENABLE=1", "NCCL_DMABUF_ENABLE=1", "HSA_NO_SCRATCH_RECLAIM=1", "NCCL_GIN_ENABLE=1", "NCCL_GIN_TYPE=7"],
"args": "-b 256M -e 1G -f 2 -g 1 -R 2 -A 1"
}
]
}
4 changes: 2 additions & 2 deletions projects/rccl/tools/ci/run-gin-ci.sh
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Expand Up @@ -22,7 +22,7 @@
# GIN_PYTEST_TIMEOUT Wall-clock cap for pytest matrix entries (default: 1800s)
# GIN_PYTEST_HW_CASES mpirun cases under -k GinSdma (default: 9). Offline
# parser/tier guards do not launch and are not counted.
# RCCL_TESTS_BCAST_GIN_TYPE NCCL_GIN_TYPE for Broadcast pytest (default: 6)
# RCCL_TESTS_BCAST_GIN_TYPE NCCL_GIN_TYPE for Broadcast pytest (default: 7)
# RCCL_TESTS_BCAST_TIMEOUT_S / RCCL_TESTS_BCAST_CONN_RETRIES
# Inner pytest launch budget. Unset → derived so
# HW_CASES * retries * TIMEOUT_S is strictly under
Expand Down Expand Up @@ -245,7 +245,7 @@ run_test() {
RCCL_TESTS_GIN_SDMA_BCAST=1 \
RCCL_TESTS_BCAST_EXE="${bcast_exe}" \
RCCL_TESTS_BCAST_NP="${NP}" \
RCCL_TESTS_BCAST_GIN_TYPE="${RCCL_TESTS_BCAST_GIN_TYPE:-6}" \
RCCL_TESTS_BCAST_GIN_TYPE="${RCCL_TESTS_BCAST_GIN_TYPE:-7}" \
RCCL_TESTS_BCAST_TIMEOUT_S="${RCCL_TESTS_BCAST_TIMEOUT_S}" \
RCCL_TESTS_BCAST_CONN_RETRIES="${RCCL_TESTS_BCAST_CONN_RETRIES}" \
RCCL_TESTS_BCAST_XENV="${bcast_xenv}" \
Expand Down
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