Issues

• Resources leaking in perftest_resources.c

  linux-rdma/perftest#409 · Filter by author cramfor opened on Oct 3, 2026

• ib_write_bw RC WRITE fails deterministically above 64 KiB on NVIDIA GB10 (ConnectX-7); minimal libibverbs probe passes at identical geometry — instrument-specific failure, with 2023/2024 prior art

  linux-rdma/perftest#394 · Filter by author tjfholdings opened on Jul 5, 2026
  3

• portAttr flag IBV_QPF_GRH_REQUIRED should set is_global in ib_write_bw (Failed to modify QP to RTR)

  linux-rdma/perftest#393 · Filter by author avnf opened on Jun 11, 2026

• ib_write_bw --rdma_cm loopback test intermittently fails with "rdma_bind_addr failed"

  linux-rdma/perftest#383 · Filter by author panjason26-eng opened on Apr 2, 2026

• Mailing list not working

  linux-rdma/perftest#373 · Filter by author sushma-4 opened on Feb 11, 2026
  1

• CPU Freq message

  linux-rdma/perftest#372 · Filter by author sushma-4 opened on Feb 11, 2026

• Degraded throughput if given buffer size (-s) is not a multiple of cache line size

  linux-rdma/perftest#361 · Filter by author warp03 opened on Nov 12, 2025

• compile error - src/send_bw.c:179:30: error: ‘VERSION’ undeclared

  linux-rdma/perftest#359 · Filter by author BaobabAfter17 opened on Oct 31, 2025

• AArch64 BlueFlame WQE posting uses ST4 — no 64B atomicity. Is this correct?

  linux-rdma/perftest#358 · Filter by author cool-ic opened on Oct 25, 2025

• Atomic latency abnormal when duplicate atomic packet in network.

  linux-rdma/perftest#356 · Filter by author ghghliu opened on Oct 10, 2025

• how to skip GDR and use bounce/temporary buffer

  linux-rdma/perftest#347 · Filter by author alokprasad opened on Sep 9, 2025
  1

• Documentation issue with cuda and dma buf

  linux-rdma/perftest#346 · Filter by author alokprasad opened on Sep 6, 2025

• Possible Bug in CPU Usage Calculation — Only User Time Considered, Ignoring System/Other Times

  linux-rdma/perftest#337 · Filter by author trevor211 opened on Jul 31, 2025

• Perftest not starting if --use_cuda_dmabuf passed before --use_cuda

  linux-rdma/perftest#336 · Filter by author skondurian opened on Jul 25, 2025
  1

• ib_write_bw -a or not？

  linux-rdma/perftest#318 · Filter by author tensorflowt opened on Mar 14, 2025
  1

• discussion: RAWETH_ADDITION & HW_CRC_ADDITION

  linux-rdma/perftest#298 · Filter by author changchengx opened on Nov 21, 2024
  2

• Comparison of GPUDirect ( GPU Memory)- NIC access vs Hop Memory GPU-> Host Memory -> NIC

  linux-rdma/perftest#297 · Filter by author alokprasad opened on Nov 13, 2024
  7

• Licensing inconsistencies

  linux-rdma/perftest#285 · Filter by author LaurentChardon opened on Aug 30, 2024

• A simple math in the reported number, the MsgRate and #iterations don't match

  linux-rdma/perftest#273 · Filter by author shenweihai1 opened on Aug 3, 2024
  3

• What is the different between bandwidth testing and lantency testing in RDMA?

  linux-rdma/perftest#266 · Filter by author YuMJie opened on Jun 8, 2024
  1

• timeout param not work, request retrans from 2ms

  linux-rdma/perftest#251 · Filter by author MCxiaofang opened on Mar 10, 2024
  1

• ib_write_bw works fine without -R. But only very small bandwidth when using -R option

  linux-rdma/perftest#240 · Filter by author chgdragon2023 opened on Jan 4, 2024
  1

• Question about ib_write_lat with CUDA

  linux-rdma/perftest#231 · Filter by author yzygitzh opened on Nov 27, 2023
  2

• Question about BW and PPS?

  linux-rdma/perftest#225 · Filter by author ReyRen opened on Sep 13, 2023
  2

• why set recv_sge_list start addr refer to buf start addr after post the recv wqes of tx-depth

  linux-rdma/perftest#208 · Filter by author smiceice opened on May 15, 2023
  2