[Darshan-users] Data written to /dev/shm not captured by Darshan

[Håkon Strandenes]

Hello,

I am trying to profile OpenFOAM (http://www.openfoam.com/) with Darshan. 
This seems to work pretty good, although I have encountered a little 
problem that I hope you could help me with:

I am trying to write the data from each process to /dev/shm to reduce 
the total filesystem IO (witch seems to be a bottleneck in some cases). 
The problem is that Darshan does not capture this data, and report 0 MB 
written to an unknown filesystem. See attached PDFs. The case is 
identical except that in the first case (Normal.pdf) all processes 
writes data to /home, and in the last case (DEV-SHM.pdf) only a few 
files are read from /home, and the rest is read and written from /dev/shm.

Does any of you have some ideas why Darshan does not capture the data 
written to/from /dev/shm?

I have tried doing this on my workstation, with another version of 
OpenFOAM (newer), and the same thing happens. OpenFOAM and Darshan is in 
both cases compiled with the same compiler, Intel and GNU respectivly.

Best regards,
Håkon Strandenes
Norwegian University of Science and Technology
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