HP MPI or MPICH2?

juliom · May 15, 2012, 20:22

Dear all, I have read everything about solver HP MPI and MPICH2.
Which are the difference between these two?
I have read the tutorial and the help file without succed.
Thanks

cdegroot · May 15, 2012, 21:41

MPI is not a solver it is an interface for parallel communication.

juliom · May 15, 2012, 23:09

I know taht it is not a solver, but I looked for it in the solver section of ANSYS. I am clear about that it is not a solver, but I don´t know the difference between these two tipe of interface for parallel communication

cdegroot · May 15, 2012, 23:18

I don't know the specific differences between them. They are just two implementations of the MPI standard. Which one you should use depends on your hardware. Have you tried both and did they work?

juliom · May 15, 2012, 23:32

No I haven´t done any try.

cdegroot · May 15, 2012, 23:36

If you are not sure which to use just give one a try. If it works, great. If not, try the next one. There shouldn't be a difference in the results you get with one versus the other in the hypothetical situation where you have both installed and functioning on your system.

May 15, 2012, 20:22	HP MPI or MPICH2?	#1
juliom Senior Member Julio Mendez Join Date: Apr 2009 Location: Fairburn, GA. USA Posts: 290 Rep Power: 18	Dear all, I have read everything about solver HP MPI and MPICH2. Which are the difference between these two? I have read the tutorial and the help file without succed. Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mpirun, best parameters	pablodecastillo	Hardware	18	November 10, 2016 12:36
MPI error	florencenawei	OpenFOAM Installation	3	October 10, 2011 01:21
mpich, mpich2, HP MPI	CFD_D_BOY	CFX	0	July 27, 2011 02:30
Error using LaunderGibsonRSTM on SGI ALTIX 4700	jaswi	OpenFOAM	2	April 29, 2008 10:54
Is Testsuite on the way or not	lakeat	OpenFOAM Installation	6	April 28, 2008 11:12

May 15, 2012, 21:41		#2
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 17	MPI is not a solver it is an interface for parallel communication.

May 15, 2012, 23:09		#3
juliom Senior Member Julio Mendez Join Date: Apr 2009 Location: Fairburn, GA. USA Posts: 290 Rep Power: 18	I know taht it is not a solver, but I looked for it in the solver section of ANSYS. I am clear about that it is not a solver, but I don´t know the difference between these two tipe of interface for parallel communication

May 15, 2012, 23:18		#4
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 17	I don't know the specific differences between them. They are just two implementations of the MPI standard. Which one you should use depends on your hardware. Have you tried both and did they work?

May 15, 2012, 23:32		#5
juliom Senior Member Julio Mendez Join Date: Apr 2009 Location: Fairburn, GA. USA Posts: 290 Rep Power: 18	No I haven´t done any try.

May 15, 2012, 23:36		#6
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 17	If you are not sure which to use just give one a try. If it works, great. If not, try the next one. There shouldn't be a difference in the results you get with one versus the other in the hypothetical situation where you have both installed and functioning on your system.