[Trilinos-Users] Compilation of Trilinos 10 on BlueGene/P

[John R Cary]

I thought I sent the patch for this yesterday.  Below.

Also another fix that you may need.

To Trilinos folks - should one use 'using'?  I can cause
problems.  Also the patch to Tpetra_MatrixIO.cpp is my best
guess.

John Cary

numbersix.cary$ cat trilinos-10.6.0.patch
diff -ruN ./packages/epetra/src/Epetra_ConfigDefs.h 
../trilinos-10.6.0-new/packages/epetra/src/Epetra_ConfigDefs.h
--- ./packages/epetra/src/Epetra_ConfigDefs.h	2010-09-29 
17:37:34.000000000 -0500
+++ ../trilinos-10.6.0-new/packages/epetra/src/Epetra_ConfigDefs.h 
2010-10-13 04:29:37.143652046 -0500
@@ -138,7 +138,7 @@
  using std::fabs;
  using std::atoi;
  using std::atof;
-using std::abs;
+// using std::abs;
  using std::pow;
  using std::sqrt;
  using std::asin;
diff -ruN ./packages/tpetra/inout/Tpetra_MatrixIO.cpp 
../trilinos-10.6.0-new/packages/tpetra/inout/Tpetra_MatrixIO.cpp
--- ./packages/tpetra/inout/Tpetra_MatrixIO.cpp	2010-09-29 
17:38:32.000000000 -0500
+++ ../trilinos-10.6.0-new/packages/tpetra/inout/Tpetra_MatrixIO.cpp 
2010-10-13 04:37:52.170664433 -0500
@@ -210,15 +210,15 @@
          char *linePtr = lineBuf;
          for (int ind=0; ind < indsPerLine; ++ind) {
            if (indicesRead == numNZ) break;
-          int ind;
+          int iind;
            // terminate the string at the end of the current ind block, 
saving the character in that location
            std::swap(NullSub,linePtr[indWidth]);
            // read the ind
-          std::sscanf(linePtr, "%d", &ind);
+          std::sscanf(linePtr, "%d", &iind);
            // put the saved character back, and put the '\0' back into 
NullSub for use again
            std::swap(NullSub,linePtr[indWidth]);
            linePtr += indWidth;
-          rowInds[indicesRead++] = ind;
+          rowInds[indicesRead++] = iind;
          }
        }
        TEST_FOR_EXCEPT(indicesRead != numNZ);
@@ -245,15 +245,15 @@
          char *linePtr = lineBuf;
          for (int val=0; val < valsPerLine; ++val) {
            if (valsRead == totalNumVals) break;
-          double val;
+          double dval;
            // terminate the string at the end of the current val block, 
saving the character in that location
            std::swap(NullSub,linePtr[valWidth]);
            // read the val
-          std::sscanf(linePtr, "%le", &val);
+          std::sscanf(linePtr, "%le", &dval);
            // put the saved character back, and put the '\0' back into 
NullSub for use again
            std::swap(NullSub,linePtr[valWidth]);
            linePtr += valWidth;
-          vals[valsRead++] = val;
+          vals[valsRead++] = dval;
          }
        }
        TEST_FOR_EXCEPT(valsRead != totalNumVals);


On 10/27/10 7:39 AM, Radu Popescu wrote:
> Hello,
>
> I've made some progress with the BlueGene. I was trying to use a cmake
> toolchain file, for cross compilation, as per the instructions on the
> cmake wiki, but that just completely confused cmake.
>
> I've managed to bypass the cross compilation toolchain file by makeing
> symlinks to the mpi wrappers for the IBM compilers and making sure the
> location of these symlinks is the first location in the PATH env
> variable.
>
> During configuration, Trilinos picks up these compilers by default and
> configurations completes successfully. However, during compilation I
> am getting a new error:
> It seems that the std::abs(int) functions has multiple definitions,
> one in<cmath>  and one in<cstdlib>. The exact error message is:
>
> "abs" is declared on line 141 of
> "/home/rpopescu/workspace/trilinos/trilinos-10.6.0-Source/packages/epetra/src/Epetra_ConfigDefs.h"
>
> I've tried passing the "-Wl,-allow-multiple-definition" flag, but it
> doesn't seem to work. Maybe I'm not doing it correctly. Also, is it
> normal
> that although the XL compilers are used, ld is still the tool called
> for linking.
>
> Regards,
> Radu
>
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