Hi,<br><br>I am trying to install PETSc while downloading MPICH, but I am facing problems running the configure script. Some errors from the configure.log file are:<br><br>*******************************************************************************<br>

         UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log for details):<br>-------------------------------------------------------------------------------<br>Error running configure on MPICH: Could not execute &quot;cd /export/home/modhurit/soft/petsc-3.2-p5/externalpackages/mpich2-1.4.1p1 &amp;&amp; ./configure --prefix=/export/home/modhurit/soft/petsc-3.2-p5/arch-linux2-c-debug CC=&quot;gcc&quot; CFLAGS=&quot; -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -g3 &quot; --disable-cxx --disable-fc F77=&quot;g77&quot; FFLAGS=&quot; -Wall -Wno-unused-variable -g  &quot; --with-device=ch3:sock --without-mpe --with-pm=hydra --enable-g=meminit --enable-fast&quot;:<br>

Configuring MPICH2 version 1.4.1p1 with  &#39;--prefix=/export/home/modhurit/soft/petsc-3.2-p5/arch-linux2-c-debug&#39; &#39;CC=gcc&#39; &#39;CFLAGS= -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas -g3 &#39; &#39;--disable-cxx&#39; &#39;--disable-fc&#39; &#39;F77=g77&#39; &#39;FFLAGS= -Wall -Wno-unused-variable -g  &#39; &#39;--with-device=ch3:sock&#39; &#39;--without-mpe&#39; &#39;--with-pm=hydra&#39; &#39;--enable-g=meminit&#39; &#39;--enable-fast&#39;<br>

Running on system: Linux faraday 2.6.18-194.26.1.el5 #1 SMP Tue Nov 9 12:54:40 EST 2010 i686 i686 i386 GNU/Linux<br><br>-----------------<br><br><br>/export/home/modhurit/soft/petsc-3.2-p5/externalpackages/mpich2-1.4.1p1/src/mpl/configure: line 7850: /scr/faraday/modhurit/matlab/RM: is a directory<br>

mkdir: cannot create directory `conftest&#39;: File exists<br>/export/home/modhurit/soft/petsc-3.2-p5/externalpackages/mpich2-1.4.1p1/src/mpl/configure: line 7877: cd: conftest: Not a directory<br>mkdir: cannot create directory `out&#39;: File exists<br>

<br>------------------<br><br>/export/home/modhurit/soft/petsc-3.2-p5/externalpackages/mpich2-1.4.1p1/src/mpl/configure: line 7913: /scr/faraday/modhurit/matlab/RM: is a directory<br>cat: confdefs.h: No such file or directory<br>

configure: error: Version information not found. Configuration aborted.<br>configure: error: MPL configure failed<br>*******************************************************************************<br><br>--------------------<br>

<br>  File &quot;/export/home/modhurit/soft/petsc-3.2-p5/config/BuildSystem/config/packages/MPI.py&quot;, line 528, in InstallMPICH<br>    raise RuntimeError(&#39;Error running configure on MPICH: &#39;+str(e))<br><br>--------------------<br>

<br>What might be going wrong? <br><br>Thanks,<br>Modhurita<br>