Gds error (gdsio)

Accelerated Computing GPU-Accelerated Libraries
1

I have a RAID-0 NVMe mounted via NFS+RDMA

mount | grep nfs
10.10.10.108:/tertiary on /nfs/tertiary type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=rdma,port=20049,timeo=600,retrans=2,sec=sys,clientaddr=10.10.10.64,local_lock=none,addr=10.10.10.108)

So it seems that RDMA is enabled. However when running the test:
gdsio -D /nfs/tertiary -d 0 -w 32 -s 1G -i 1M -x 0 -I 0 -T 120
I get the error:

unable to open file /nfs/tertiary/gdsio.0, error:No such file or directory

I use Ubuntu 22.04 LTS and cuda 11.7. Anybody knows what’s going wrong here?

2

The problem was the following: when using the -D option with read mode (“-I 0”) one has to make sure that there are enough files available in the directory. E.g. just run in write mode (“-I 1”) with same amount of workers to create the files and read them afterwards.

3

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