microsoft/mscclpp
1
0
Fork 0
mirror of https://github.com/microsoft/mscclpp.git synced 2026-05-12 09:17:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update warning message for multi-node IB check

Browse Source
This commit is contained in:
Qinghua Zhou
2026-04-03 18:34:22 +00:00
parent 3148819dea
commit 5d938d6f47
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
python/test/test_alltoallv_mscclpp.py
View File

@@ -174,7 +174,9 @@ def main():
print(f" IB devices: {ib_devices if ib_devices else 'NONE FOUND'}")
print(f" MSCCLPP_SOCKET_IFNAME: {os.environ.get('MSCCLPP_SOCKET_IFNAME', '<not set>')}")
if is_multi_node and not ib_devices:
print(f" WARNING: Multi-node detected but no IB devices! Cross-node will fail.")
print(f" NOTE: Multi-node detected but no IB devices. "
f"GB200 NVSwitch can handle cross-node without IB; "
f"on Hopper/Ampere IB is required.")
# Also print from rank n_ranks_per_node (first rank on node 1) for comparison
if is_multi_node and rank == n_ranks_per_node and _DEBUG:
print(f" [Node 1] Hostname: {hostname}, rank={rank}")