[mpich-discuss] some help in the simplest problem mpich2

[Nicolas Rosner]

Hello,

a) Is the executable actually present on each machine? If you are
running it off a network share (e.g. a shared home dir, or some other
shared dir that both hosts can access using identical pathnames) then
this shouldn't be an issue. Otherwise, maybe you need to copy it over.

b) Environment issue (env vars, e.g. your PATH, etc)? Try using
absolute pathnames instead of just "hello" or "./hello". Normally your
remote session should inherit your local env automatically, but this
may not always be sufficient, or even what you want at all (e.g. if
the actual environments or filesystems aren't identical to begin
with!).

c) I'm assuming both machines' architectures match? If you need to
re-ask, please do include some context info (OS version, MPICH2
version, etc).

Good luck
N