c - Make a file availabe on all nodes -

I am writing an MPI application that takes a filename as a logic and from a file using regular C functions Tries to read I run this application on several nodes of cluster using qsub , which in turn uses mpiexec .

This application runs fine on the local node where I have to file directly to mpiexec :

  mpiexec -n 4 ~ / My_app ~ / input_file.txt  

But when I submit it to qsub to run on other nodes of the cluster, the part of reading the file fails . Errors of the application on the fopen call - this file can not open (likely because it does not exist).

The question is, how can I make the file available to all the nodes? I looked at the qsub manpage and did not fix anything.

I think the vanilla gorilla does not need any more answers? However, let's consider the case of a pathological system, which does not have any parallel file system and the file system available only on one node. To achieve its goal there is a way in ROMIO (a very common MPI-IO implementation):