[Coin-discuss] [Coin-discuss/list] coin Blis supports MPICH or MPICH2

[Jack Bryan]

thanks

Where can I find the Blis  C++ API function list? 

I can not find them on the website. 

I need to use BLIS as a black box to solve MILP. 

For example,  
BLIS_Solve(mpi, process_number, MILP_model, returned_solution).

Does Blis  C++ API function support these kinds of uses ? or other possible use-format ? 

Any help is appreciated. 

JACK

Feb.  5  2009


From: Yan.Xu at sas.com
To: dtustudy68 at hotmail.com
CC: coin-discuss at list.coin-or.org; chipps at list.coin-or.org
Date: Thu, 5 Feb 2009 10:03:18 -0500
Subject: RE: [Coin-discuss] coin Blis supports MPICH or MPICH2



















Fogot to mention that Blis is written in C++, and it API will be
C++ code. 

 

If only change objective coefficients, then it will be quick to
add a set objective function. If need change others like constraint matrix. It
requires  a bit more work. Please let me know what you need change the
model.

 

Copy to chipps mailing list. Please use that mailing list
because not all people in coin-discuss might be interested in chipps.

 

Best,

Yan

 

 





From: Jack Bryan
[mailto:dtustudy68 at hotmail.com] 

Sent: Wednesday, February 04, 2009 11:31 AM

To: Yan Xu

Cc: coin-discuss at list.coin-or.org

Subject: RE: [Coin-discuss] coin Blis supports MPICH or MPICH2





 

thanks,



Does parallel BLIS support API routines calling from C or C++ program ? 



Does parallel  Blis support some operations on MILP models ? 



I need some API routines to do some operations on A,b,c parameters of MILP
models 

and then call parallel  BLIS solver to solve the MILP model.



But, I need to change the obj. function C to the MILP model at each iteration ,
and 

then solve the new MILP model with parallel  BLIS .



It means that I can not write a MILP models as an output file with mps format.

I have to solve a new model with parallel  BLIS at each
iteration on the fly.



I have used lp_solve (another open source solver) API routines to design a C
program 

and it works well.



Now, I want to solve large MILP models so I only want to use parallel
BLIS
as a black box.



I want to change my original C program as little as possible so that I can 

focus on algorithm design not on programing with different languages.



I find that lp_solve support API from C (also maybe C++).

Now, I hope that parallel  BLIS also suport API from C or C++.



I plan to design a C program that can call lP_solve API routines to do some 

operations on A,b,c and generate a mew MILP model on the fly and then the C 

program can also call parallel  BLIS API routines such that the new model 

can be solved by parallel  BLIS. 



Any help is apprecited.



Jack.

Feb.  4 2009











From: Yan.Xu at sas.com

To: dtustudy68 at hotmail.com; coin-discuss at list.coin-or.org

Date: Wed, 4 Feb 2009 11:01:33 -0500

Subject: RE: [Coin-discuss] coin Blis supports MPICH or MPICH2



I checked my notes. Here is more details. I tried mpich-1.2.7
and mpich2-1.0.4 before. They are fine with BLIS except you need add an extra
option

 

   CXXDEFS=”-DMPICH_IGNORE_CXX_SEEK”

 

in configuring command line if using mpich2-1.0.4.

 

Yan

 

 

 





From: Yan Xu 

Sent: Wednesday, February 04, 2009 10:47 AM

To: 'Jack Bryan'; coin-discuss at list.coin-or.org

Subject: RE: [Coin-discuss] coin Blis supports MPICH or MPICH2





 

Jack,

 

ALPS/BLIS uses functions defined by MPI-1 only. It looks to me
that MPICH implements MPI-1 and MPICH2 implements MPI-1 and MPI-2. So, Blis
should runs fine with MPICH and MPICH2.

 

Hope  this helps,

Yan

 





From: coin-discuss-bounces at list.coin-or.org
[mailto:coin-discuss-bounces at list.coin-or.org] On Behalf Of Jack Bryan

Sent: Wednesday, February 04, 2009 10:04 AM

To: coin-discuss at list.coin-or.org

Subject: [Coin-discuss] coin Blis supports MPICH or MPICH2





 

Hi, 



Blis solver supports MPICH or MPICH2 ?



which version ?



Any help is apprecited.



Jack.

Feb.  4 2009







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