Merge remote-tracking branch 'nccl/master' into HEAD

src/graph/topo.cc

@@ -78,9 +78,6 @@ static ncclResult_t ncclTopoGetInterCpuBw(struct ncclTopoNode* cpu, float* bw) {
   if (cpu->cpu.arch == NCCL_TOPO_CPU_ARCH_X86 && cpu->cpu.vendor == NCCL_TOPO_CPU_VENDOR_INTEL) {
     *bw = cpu->cpu.model == NCCL_TOPO_CPU_TYPE_SKL ? SKL_QPI_BW : QPI_BW;
   }
-  if (cpu->cpu.arch == NCCL_TOPO_CPU_ARCH_X86 && cpu->cpu.vendor == NCCL_TOPO_CPU_VENDOR_AMD) {
-    *bw = AMD_BW;
-  }
   if (cpu->cpu.arch == NCCL_TOPO_CPU_ARCH_X86 && cpu->cpu.vendor == NCCL_TOPO_CPU_VENDOR_ZHAOXIN) {
     *bw = cpu->cpu.model ==  NCCL_TOPO_CPU_TYPE_YONGFENG ? YONGFENG_ZPI_BW : ZPI_BW;
   }