Regarding Files-in-Memory (FiM) feature in Molcas 8.0

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Posted by Mariusz Radon on July 09, 2015 at 12:14:13:

Dear All,

I am interesting in activating the new functionality Files-in-Memory (FiM) in Molcas 8.0-sp1.

My first question is how to make sure that FiM is really activated. I have set up MOLCAS_FIM=1 and defined MOLCAS_MAXMEM and MOLCAS_MEM to reasonable values. I have also edited my ~/.Molcas/*.prgm files for selected programs (mostly `caspt2.prgm' and `rasscf.prgm'). However, I can find nothing in the output confirming that the FiM technology is activated (even though MOLCAS_PRINT is set to VERBOSE). Is it fine?

The second question. From the I/O access patterns of the caspt2 program I realized that files named RHS_01, RHS_02, ..., RHS_06 have a high percentage of random writes. So, according to the manual, these files are good candidates for keeping in memory. The problem is that these files are not mentioned in `caspt2.prgm'. So, how can I activate FiM for these files?

Thank you in advance!

With best regards,
Mariusz Radon

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