[Joachim]

Hey everyone!

I am using MPI to exchange a large number of values between many processors, more or less simultaneously.

I have been using mpi_send/mpi_recv, but I am not sure what to do regarding the tags. At some point, I am afraid that two 'sends' will get the same tag value, which I assume will generate some problems.

Is there a way to deal with this? Right now, I have been using tags like 1000*a + 10000*b, etc where a and b are the indices associated with my parameters. It is working just fine, but my code is quickly becoming messy. Is there a more elegant way to solve this problem?

Thanks!

Joachim