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Improve RCCL kernel coll trace (#2061)

Este cometimento está contido em:
Wenkai Du
2026-01-08 16:07:18 -08:00
cometido por GitHub
ascendente de931f4c53
cometimento 1d22c87167
4 ficheiros modificados com 63 adições e 26 eliminações
+24 -10
Ver ficheiro
@@ -27,17 +27,30 @@
#endif
#if defined(__gfx1100__) || defined(__gfx1101__) || defined(__gfx1102__) || defined(__gfx1200__) || defined(__gfx1201__)
#define __trace_hwreg()
#define __trace_hwreg() \
collTrace->data_0 = 0;
#else
#define __trace_hwreg() \
asm volatile ("s_getreg_b32 %0, hwreg(HW_REG_HW_ID)" : "=s" (collTrace->data_0));
{ int32_t hwid; \
asm volatile ("s_getreg_b32 %0, hwreg(HW_REG_HW_ID)" : "=s" (hwid)); \
collTrace->data_0 = hwid >> 4; }
#endif
#if defined(__gfx942__) || defined(__gfx950__)
#define __trace_xccid() \
{ int32_t xccId; \
asm volatile ("s_getreg_b32 %0, hwreg(HW_REG_XCC_ID)" : "=s" (xccId)); \
collTrace->xccId = xccId; }
#else
#define __trace_xccid() \
collTrace->xccId = 0;
#endif
#ifdef ENABLE_COLLTRACE
#define INC_COLL_TRACE \
uint32_t pos = __hip_atomic_fetch_add(&ncclShmem.collTraceTail->tail, 1, __ATOMIC_SEQ_CST, __HIP_MEMORY_SCOPE_WORKGROUP)%COLLTRACE_NUM_ITEMS; \
struct ncclCollTrace* collTrace = ncclShmem.collTrace+pos; \
collTrace->timeStamp = wall_clock64(); \
collTrace->bid = blockIdx.x; \
collTrace->tid = threadIdx.x; \
collTrace->channelId = ncclShmem.channelId;
// TODO: switch to atomicInc after llvm crash is fixed
@@ -46,7 +59,8 @@
#define traceKernelLaunch(launch_type, ix) { \
INC_COLL_TRACE \
collTrace->funcIndex = ncclShmem.funcId; \
__trace_hwreg()\
__trace_hwreg() \
__trace_xccid() \
collTrace->batchIx = ix; \
if (ncclShmem.workType == ncclDevWorkTypeP2p) { \
struct ncclDevWorkP2p *p2pWork = (struct ncclDevWorkP2p*)ncclShmem.workStorage; \
@@ -63,7 +77,7 @@
collTrace->p2p.recvRegistered = p2pWork->recvNetReg; \
collTrace->p2pOpCount[0] = p2pWork->sendOpCount; \
collTrace->p2pOpCount[1] = p2pWork->recvOpCount; \
collTrace->type = (launch_type) | ncclCollTraceP2pElemType; \
__hip_atomic_store(&collTrace->type, (launch_type) | ncclCollTraceP2pElemType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
} else if (ncclShmem.workType == ncclDevWorkTypeColl) { \
struct ncclDevWorkColl *collWork = (struct ncclDevWorkColl*)ncclShmem.workStorage; \
collTrace->coll.nWarps = collWork->nWarps; \
@@ -71,7 +85,7 @@
collTrace->coll.bid = ncclShmem.channelId - collWork->channelLo; \
collTrace->coll.root = collWork->root; \
collTrace->opCount = collWork->opCount; \
collTrace->type = (launch_type) | ncclCollTraceCollElemType; \
__hip_atomic_store(&collTrace->type, (launch_type) | ncclCollTraceCollElemType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
} \
}
#define traceKernelEnd(end_type) { \
@@ -81,11 +95,11 @@
struct ncclDevWorkP2p *p2pWork = (struct ncclDevWorkP2p*)ncclShmem.workStorage; \
collTrace->p2pOpCount[0] = p2pWork->sendOpCount; \
collTrace->p2pOpCount[1] = p2pWork->recvOpCount; \
collTrace->type = (end_type) | ncclCollTraceP2pElemType; \
__hip_atomic_store(&collTrace->type, (end_type) | ncclCollTraceP2pElemType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
} else if (ncclShmem.workType == ncclDevWorkTypeColl) { \
struct ncclDevWorkColl *collWork = (struct ncclDevWorkColl*)ncclShmem.workStorage; \
collTrace->opCount = collWork->opCount; \
collTrace->type = (end_type) | ncclCollTraceCollElemType; \
__hip_atomic_store(&collTrace->type, (end_type) | ncclCollTraceCollElemType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
} \
}
#define traceData(data2, data4, data8_0, data8_1) { \
@@ -94,12 +108,12 @@
collTrace->data_0 = data4; \
collTrace->opCount = data8_0; \
collTrace->data_1 = data8_1; \
collTrace->type = ncclCollTraceDataType; \
__hip_atomic_store(&collTrace->type, ncclCollTraceDataType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
}
#define traceAbort(){\
INC_COLL_TRACE\
collTrace->funcIndex = ncclShmem.funcId;\
collTrace->type = ncclCollTraceAbortType;\
__hip_atomic_store(&collTrace->type, ncclCollTraceAbortType, __ATOMIC_RELEASE, __HIP_MEMORY_SCOPE_WORKGROUP); \
}
#else
#define traceKernelLaunch(launch_type, batchIx)