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### [Scalapack] using subroutines scalapack

 ```Dear Peter, Have you also looked at http://acts.nersc.gov/scalapack/hands-on/datadist.html and http://acts.nersc.gov/scalapack/hands-on ? The former shows how the block cyclic distribution required by ScaLAPACK works, the second contains examples that may help you understand how to set the array descriptors (that is what DESCINIT does). I hope this helps, Osni ``````Dear Mr/Ms, I am a dutch student and on this moment I'm following a traineeship at TNO. TNO has a cluster to compute parallel problems. One of my tasks is to find out which libraries can be used for parallel computing, for example solving a system of lineair equations. I have tried to use the subroutine PSGESV but it still doesn't work. The problem is that I don't know how exactly work the subroutines DESCINIT and PSGESV. Imagine, we have the system of lineair equations Ax=B with: 1 2 3 4 5 6 7 8 9 285 -1 2 3 4 5 6 7 8 9 283 1 -2 3 4 5 6 7 8 9 277 1 2 -3 4 5 6 7 8 9 267 A = 1 2 3 -4 5 6 7 8 9 B = 253 1 2 3 4 -5 6 7 8 9 235 1 2 3 4 5 -6 7 8 9 213 1 2 3 4 5 6 -7 8 9 187 1 2 3 4 5 6 7 -8 9 157 Processgrid: (1,4) Blocksize : (2,2) My question is: what are the values from the arguments from the subroutines DESCINIT and PSGESV (in Fortran 90)? On the Internet, I've seen many examples of PSGESV but I still don't understand how I can solve this system of lineair equations. I hope so much that you can help me further! Would you please help me? Kind regards, Peter Keereweer peter.keereweer@Domain.Removed This e-mail and its contents are subject to the DISCLAIMER at http://www.tno.nl/disclaimer/email.html _______________________________________________ Scalapack mailing list Scalapack@Domain.Removed http://lists.cs.utk.edu/listinfo/scalapack `````` ```
 Current Thread [Scalapack] using subroutines scalapack, Peter Keereweer [Scalapack] using subroutines scalapack, Osni Marques <=

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