Thanks, now all makes more sense to me. I'll try the hard way, multiple builds for multiple envs ;)
Eric Le dimanche 16 juillet 2006 18:21, Brian Barrett a écrit : > On Jul 16, 2006, at 4:13 PM, Eric Thibodeau wrote: > > Now that I have that out of the way, I'd like to know how I am > > supposed to compile my apps so that they can run on an homogenous > > network with mpi. Here is an example: > > > > kyron@headless ~/1_Files/1_ETS/1_Maitrise/MGL810/Devoir2 $ mpicc -L/ > > usr/X/lib -lm -lX11 -O3 mandelbrot-mpi.c -o mandelbrot-mpi > > > > kyron@headless ~/1_Files/1_ETS/1_Maitrise/MGL810/Devoir2 $ mpirun -- > > hostfile hostlist -np 3 ~/1_Files/1_ETS/1_Maitrise/MGL810/Devoir2/ > > mandelbrot-mpi > > > > ---------------------------------------------------------------------- > > ---- > > > > Could not execute the executable "/home/kyron/1_Files/1_ETS/ > > 1_Maitrise/MGL810/Devoir2/mandelbrot-mpi": Exec format error > > > > > > This could mean that your PATH or executable name is wrong, or that > > you do not > > > > have the necessary permissions. Please ensure that the executable > > is able to be > > > > found and executed. > > > > ---------------------------------------------------------------------- > > ---- > > > > As can be seen with the uname -a that was run previously, I have 2 > > "local nodes" on the x86_64 and two i686 nodes. I tried to find > > examples in the Doc on howto compile applications correctly for > > such a setup without compromising performance but I came short of > > an example. > > From the sound of it, you have a heterogeneous configuration -- some > nodes are x86_64 and some are x86. Because of this, you either have > to compile your application twice, once for each platform or compile > your application for the lowest common denominator. My guess would > be that it easier and more foolproof if you compiled everything in 32 > bit mode. If you run in a mixed mode, using application schemas (see > the mpirun man page) will be the easiest way to make things work. > > > Brian > -- Eric Thibodeau Neural Bucket Solutions Inc. T. (514) 736-1436 C. (514) 710-0517
