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Re: [charm] Charm 6.2.2 build


Chronological Thread 
  • From: Jim Phillips <jim AT ks.uiuc.edu>
  • To: "Swartz, Brent A. (GSFC-610.3)[ADVANCED MANAGEMENT TECHNOLOGY]" <brent.a.swartz AT nasa.gov>
  • Cc: Phil Miller <mille121 AT illinois.edu>, "gzheng AT illinois.edu" <gzheng AT illinois.edu>, "charm AT cs.uiuc.edu" <charm AT cs.uiuc.edu>
  • Subject: Re: [charm] Charm 6.2.2 build
  • Date: Wed, 29 Sep 2010 13:46:25 -0500 (CDT)
  • List-archive: <http://lists.cs.uiuc.edu/pipermail/charm>
  • List-id: CHARM parallel programming system <charm.cs.uiuc.edu>


I think the Intel compiler tries to use some of the system gpu libraries for compatibility reasons. Can you link and run hello world with icpc directly or with mpicxx run at the command line? If not then you need to fix those problems before attempting to build Charm++.

Your other option is to build an net-linux_x86_64-ibverbs-icc version of Charm++, in what case icc/icpc is used directly and you don't need mpicxx.

-Jim


On Tue, 28 Sep 2010, Swartz, Brent A. (GSFC-610.3)[ADVANCED MANAGEMENT
TECHNOLOGY] wrote:

Right you are!

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
cat ../charm-6.2.2/mpi-linux-x86_64-ifort/tmp/charmconfig.out

### whether C++ compiler works
#include <stdio.h>
void foo(void) {
printf("Hello, world!\n");
}
mpicxx -I../include -I. -c test.cpp -o test.o
### whether linker works
#include <stdio.h>
int main() {
printf("Hello, world!\n");
return 0;
}
mpicxx -I../include -I. -c test.cpp -o test.o
mpicxx -o testlink test.o
test.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`operator new(unsigned long)'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`vtable for __cxxabiv1::__si_class_type_info'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`operator delete(void*)'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`__cxa_pure_virtual'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`vtable for __cxxabiv1::__class_type_info'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`__cxa_throw'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`operator delete[](void*)'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`operator new[](unsigned long)'
/usr/local/intel/mpi/3.1.038/lib64/libmpiic4.so: undefined reference to
`__cxa_allocate_exception'

I don't understand why it is apparently using g++ when I specified icc.

- Brent

On 9/28/10 4:18 PM, "Gengbin Zheng"
<zhenggb AT gmail.com>
wrote:

it appears that you read the wrong output file:
mpi-linux-ifort-icc/tmp/charmconfig.out

as you were building: mpi-linux-ifort
you should look at: mpi-linux-ifort/tmp/charmconfig.out

Gengbin

On Tue, Sep 28, 2010 at 4:12 PM, Swartz, Brent A. (GSFC-610.3)[ADVANCED MANAGEMENT
TECHNOLOGY]
<brent.a.swartz AT nasa.gov>
wrote:
Hi Jim,

It is not what I expected!:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tests/charm++/megatest>
mpicxx -V
g++: couldn't run 'x86_64-suse-linux-gcc--I/usr/local/intel/mpi/3.2.2.006/include64
<http://3.2.2.006/include64><http://3.2.2.006/include64> ': No such file or
directory
baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tests/charm++/megatest>
which mpicxx
/usr/local/intel/mpi/3.2.2.006/bin64/mpicxx
<http://3.2.2.006/bin64/mpicxx><http://3.2.2.006/bin64/mpicxx>

Apparently mpicxx is defaulting to g++. So I changed the modules I have
loaded:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
module load comp/intel-10.1.023 lib/mkl-10.1.2.024 mpi/impi-3.1.038

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
!mpi
mpicxx -V
g++: couldn't run
'x86_64-suse-linux-gcc--I/usr/local/intel/mpi/3.1.038/include64': No such
file or directory
baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
!whi
which mpicxx
/usr/local/intel/mpi/3.1.038/bin64/mpicxx

But it still defaults to g++. So I set the relevant env var to make it choose
icc:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
env I_MPI_CXX=icc mpicxx -V
Intel(R) C Compiler for applications running on Intel(R) 64, Version 10.1
Build 20090615 Package ID: l_cc_p_10.1.023
Copyright (C) 1985-2009 Intel Corporation. All rights reserved.

Thus I rebuilt charm++:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
env I_MPI_CXX=icc env MPICXX=mpicxx ./build charm++ mpi-linux-x86_64 ifort
--no-build-shared --with-production >& build.out.5

In build.out.5:

gmake[1]: Entering directory
`/gpfsm/dnb33/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tmp'
./configure
checking machine name... mpi-linux-x86_64-ifort
checking "cp command as"... cp -p
checking "C++ compiler as"... "mpicxx -optimize -nobs"
checking "whether C++ compiler works"... "ok"
checking "C++ linker as"... "mpicxx "
checking "whether linker works"... "no"
Cannot link C++ programs with mpicxx
(check your charm++ version)
*** Please find detailed output in charmconfig.out ***
gmake[1]: *** [conv-autoconfig.h] Error 1
gmake[1]: Leaving directory
`/gpfsm/dnb33/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tmp'
gmake: *** [headers] Error 2
-------------------------------------------------
Charm++ NOT BUILT. Either cd into mpi-linux-x86_64-ifort/tmp and try

to resolve the problems yourself, visit
http://charm.cs.uiuc.edu/
for more information. Otherwise, email the developers at
charm AT cs.uiuc.edu

So looking at mpi-linux-ifort-icc/tmp/charmconfig.out we have:

### whether ucontext uses uc_regs
#include <ucontext.h>

int main()
{
ucontext_t context;
context.uc_mcontext.uc_regs = 0;
}
icpc -fpic -I../include -I. -c test.cpp -o test.o
test.cpp(6): error: class "mcontext_t" has no member "uc_regs"
context.uc_mcontext.uc_regs = 0;
^

compilation aborted for test.cpp (code 2)

So it appears it cannot find ucontext.h - Where is this normally found?
I could not find it in the charm subdir.

- Brent


On 9/28/10 3:32 PM, "Jim Phillips"
<jim AT ks.uiuc.edu>
wrote:

Hi again,

What does "mpicxx -V" give you? It should be something like this:

[jphillip@honest2
~]$ mpicxx -V
Intel(R) C++ Compiler for applications running on Intel(R) 64, Version
10.1 Build 20080602 Package ID: l_cc_p_10.1.017
Copyright (C) 1985-2008 Intel Corporation. All rights reserved.

-Jim


On Tue, 28 Sep 2010, Swartz, Brent A. (GSFC-610.3)[ADVANCED MANAGEMENT
TECHNOLOGY] wrote:

Hi Phil et al,

I successfully rebuilt using:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2>
env MPICXX=mpicxx ./build charm++ mpi-linux-x86_64 ifort
--no-build-shared --with-production >& build.out.4

But when I compile the megatest pgm I get:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tests/charm++/megatest>
make pgm >& make.out.1

../../../bin/charmc -cxx=icc -o pgm megatest.o groupring.o nodering.o
varsizetest.o varraystest.o groupcast.o groupmulti.o groupsectiontest.o
multisectiontest.o nodecast.o synctest.o fib.o arrayring.o tempotest.o
packtest.o queens.o migration.o marshall.o priomsg.o priotest.o rotest.o
statistics.o templates.o inherit.o reduction.o bitvector.o immediatering.o
callback.o inlineem.o -language charm++ -lguide -cxx=icc
megatest.o:(.gnu.linkonce.d._ZTI4main[.gnu.linkonce.d._ZTI4main]+0x0):
undefined reference to `vtable for __cxxabiv1::__si_class_type_info'
megatest.o:(.gnu.linkonce.d.DW.ref.__gxx_personality_v0+0x0): undefined
reference to `__gxx_personality_v0'
groupring.o: In function `groupring_group::~groupring_group()':
groupring.C:(.gnu.linkonce.t._ZN15groupring_groupD1Ev[.gnu.linkonce.t._ZN15groupring_groupD1Ev]+0x4a):
undefined reference to `operator delete[](void*)'
groupring.C:(.gnu.linkonce.t._ZN15groupring_groupD1Ev[.gnu.linkonce.t._ZN15groupring_groupD1Ev]+0xf3):
undefined reference to `operator delete[](void*)'
groupring.C:(.gnu.linkonce.t._ZN15groupring_groupD1Ev[.gnu.linkonce.t._ZN15groupring_groupD1Ev]+0x18e):
undefined reference to `operator delete[](void*)'

Then I edited the Makefile to remove all -cxx=icc references. Then I get:

../../../bin/charmc -o inlineem.o inlineem.C
../../../bin/charmc -o pgm megatest.o groupring.o nodering.o varsizetest.o
varraystest.o groupcast.o groupmulti.o groupsectiontest.o multisectiontest.o
nodecast.o synctest.o fib.o arrayring.o tempotest.o packtest.o queens.o
migration.o marshall.o priomsg.o priotest.o rotest.o statistics.o templates.o
inherit.o reduction.o bitvector.o immediatering.o callback.o inlineem.o
-language charm++ -lguide
../../../bin/../lib/libthreads-default.o: In function `CthRegister':
threads.c:(.text+0xdb): undefined reference to `_intel_fast_memset'
../../../bin/../lib/libthreads-default.o: In function `CthRegistered':
threads.c:(.text+0x16b): undefined reference to `_intel_fast_memset'
../../../bin/../lib/libthreads-default.o: In function `CthSwitchThread':
threads.c:(.text+0x26a): undefined reference to `_intel_fast_memset'
../../../bin/../lib/libthreads-default.o: In function `CthBaseResume':
threads.c:(.text+0x4da): undefined reference to `_intel_fast_memset'
...
../../../bin/../lib/libconv-core.a(debug-conv.o): In function
`CpdDebugCallAllocationTree':
debug-conv.c:(.text+0x459): undefined reference to `__intel_sse2_strlen'
../../../bin/../lib/libconv-core.a(debug-conv.o): In function
`CpdDebugCallMemStat':
debug-conv.c:(.text+0x788): undefined reference to `__intel_sse2_strlen'
...

This is the problem I saw before. I thought these routines were in the
-lguide compiler lib, as I can see then in the nm output:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tests/charm++/megatest>
nm /usr/local/intel/Compiler/11.1/072/lib/intel64/libguide.a > guide.nm

fastmemset.o:
U __kmp_external___intel_cpu_indicator
U __kmp_external___intel_cpu_indicator_init
0000000000000000 T __kmp_external__intel_fast_memset
0000000000000036 T __kmp_external__intel_fast_memset.A
000000000000002e T __kmp_external__intel_fast_memset.J
U __kmp_external___intel_new_memset
U memset

Although these symbols are not exactly _intel_fast_memset ... They look more
like pthreads references.
I get the same undefined references with and without the -lguide.
So I guess the question here is what libs do I need to include to satisfy
these undefined references?
Or should I build charm with different options (icc)?

Thanks,

- Brent

On 9/28/10 11:18 AM, "Jim Phillips"
<jim AT ks.uiuc.edu>
wrote:



Adding -cxx=icc is probably what broke it. The mpi builds need to use
mpicc and mpicxx to get all of the libraries correctly. Your mpicc and
mpicxx scripts need to use icc as the base compiler.

The NAMD build uses icc directly and calls charmc to link, but everything
in the charm tree just uses charmc (and in this case mpicc/mpicxx).

-Jim


On Tue, 28 Sep 2010, Swartz, Brent A. (GSFC-610.3)[ADVANCED MANAGEMENT
TECHNOLOGY] wrote:

Hi Phil,

Yes I originally tried the mpi-linux-x86_64 build target, with and
without icc and ifort, and charm++ built, but when I attempt to compile
the megatest sample code (I added the -cxx=icc to the Makefile) I get:

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-mpicxx/tests/charm++/megatest>
make pgm

...
../../../bin/charmc -cxx=icc -c inlineem.ci
<http://inlineem.ci><http://inlineem.ci>
../../../bin/charmc -cxx=icc -o inlineem.o inlineem.C
icpc: command line warning #10156: ignoring option '-c'; no argument required
../../../bin/charmc -cxx=icc -o pgm megatest.o groupring.o nodering.o
varsizetest.o varraystest.o groupcast.o groupmulti.o groupsectiontest.o
multisectiontest.o nodecast.o synctest.o fib.o arrayring.o tempotest.o
packtest.o queens.o migration.o marshall.o priomsg.o priotest.o rotest.o
statistics.o templates.o inherit.o reduction.o bitvector.o immediatering.o
callback.o inlineem.o -language charm++ -lguide -cxx=icc
Fatal Error by charmc in directory
/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/tests/charm++/megatest
charmc : No such thread mode default
charmc exiting...
make: *** [pgm] Error 1

Prior to that I was getting:
baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort.old/tests/charm++/megatest>
make pgm
../../../bin/charmc -cxx=icc -o pgm megatest.o groupring.o nodering.o
varsizetest.o varraystest.o groupcast.o groupmulti.o groupsectiontest.o
multisectiontest.o nodecast.o synctest.o fib.o arrayring.o tempotest.o
packtest.o queens.o migration.o marshall.o priomsg.o priotest.o rotest.o
statistics.o templates.o inherit.o reduction.o bitvector.o immediatering.o
callback.o inlineem.o -language charm++ -lguide -cxx=icc
megatest.o:(.gnu.linkonce.d._ZTI4main[.gnu.linkonce.d._ZTI4main]+0x0):
undefined reference to `vtable for __cxxabiv1::__si_class_type_info'
megatest.o:(.gnu.linkonce.d.DW.ref.__gxx_personality_v0+0x0): undefined
reference to `__gxx_personality_v0'
groupring.o: In function `groupring_group::~groupring_group()':
groupring.C:(.gnu.linkonce.t._ZN15groupring_groupD1Ev[.gnu.linkonce.t._ZN15groupring_groupD1Ev]+0x4a):
undefined reference to `operator delete[](void*)'
groupring.C:(.gnu.linkonce.t._ZN15groupring_groupD1Ev[.gnu.linkonce.t._ZN15groupring_groupD1Ev]+0xf3):
undefined reference to `operator delete[](void*)'
... (More similar undefined references)

Also, while building charm++ I got the following error:

../bin/charmc -optimize -nobs -I. -o ../lib/libmemory-charmdebug.o
-DCMK_MEMORY_BUILD_CHARMDEBUG memory.c || touch ../lib/libmemory-charmdebug.o
memory-charmdebug.c(388): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning stack from %p (%d) to %p
(%d)\n",begin_stack,begin_stack,end_stack,end_stack);
^

memory-charmdebug.c(388): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning stack from %p (%d) to %p
(%d)\n",begin_stack,begin_stack,end_stack,end_stack);

^

memory-charmdebug.c(401): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning data from %p (%d) to %p
(%d)\n",info->begin_data,info->begin_data,info->end_data,info->end_data);
^

memory-charmdebug.c(401): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning data from %p (%d) to %p
(%d)\n",info->begin_data,info->begin_data,info->end_data,info->end_data);

^

memory-charmdebug.c(416): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning bss from %p (%d) to %p
(%d)\n",info->begin_bss,info->begin_bss,info->end_bss,info->end_bss);
^

memory-charmdebug.c(416): warning #181: argument is incompatible with
corresponding format string conversion
printf("scanning bss from %p (%d) to %p
(%d)\n",info->begin_bss,info->begin_bss,info->end_bss,info->end_bss);

^

memory-charmdebug.c(1321): warning #181: argument is incompatible with
corresponding format string conversion
sprintf(buf,"slot size %d\n",sizeof(Slot));
^

memory-charmdebug.c(1542): error: expected an identifier
void setMemoryTypeChare(void *ptr) {
^

memory-charmdebug.c(1542): error: expected a ";"
void setMemoryTypeChare(void *ptr) {
^

memory-isomalloc.h(17): warning #12: parsing restarts here after previous
syntax error
void *malloc_nomigrate(size_t size);
^

compilation aborted for memory.c (code 2)
Fatal Error by charmc in directory
/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/mpi-linux-x86_64-ifort/tmp
Command mpicc -m64 -fPIC -I../bin/../include -D__CHARMC__=1 -I.
-DCMK_MEMORY_BUILD_CHARMDEBUG -O -c memory.c -o ../lib/libmemory-charmdebug.o
returned error code 2
charmc exiting...

However charm++ does build successfully despite these errors.

Cheers,

- Brent


On 9/27/10 5:36 PM, "Phil Miller"
<mille121 AT illinois.edu>
wrote:

On Mon, Sep 27, 2010 at 17:11, Swartz, Brent A. (GSFC-610.3)[ADVANCED
MANAGEMENT TECHNOLOGY]
<brent.a.swartz AT nasa.gov>
wrote:
In order to install the latest NAMD on our cluster here I am attempting to
build charm for our Intel Xeon EM64T processor (Nehamlem, Harpertown,
Woodcrest, Dempsey) cluster running SUSE Linux here at NASA GSFC. I want to
use the Intel compilers (icc, ifort) and Intel MPI to communicate between
the nodes. So I have the following modules loaded on our system:

module load comp/intel-11.1.072 mpi/impi-3.2.2.006

baswartz@discover08:/discover/nobackup/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2
.7b4_Source/charm-6.2.2> uname -a
Linux discover08 2.6.16.60-0.42.5-smp #1 SMP Mon Aug 24 09:41:41 UTC 2009
x86_64 x86_64 x86_64 GNU/Linux

Then I attempt to build charm:

env MPICXX=mpicxx ./build charm++ mpi-linux icc ifort --no-build-shared
--with-production >& build.out.3

If you like I can email you the entire build.out.3 file, but the main
problems appear to be:

[snip irrelevant parts]

Running configure on i386-gcc
( cd QuickThreads ; /usr/bin/gmake qt OPTS='-optimize -nobs' ) || ( echo
"Did you try to build net-linux on a 64-bit system? Try net-linux-x86_64" &&
false )
gmake[1]: Entering directory
`/gpfsm/dnb33/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/m
pi-linux-ifort-icc/tmp/QuickThreads'
rm -f qtmd.h
ln -s md/i386.h qtmd.h
../../bin/charmc -seq -I. -o qt.o qt.c
as -o qtmds.o md/i386.s
md/i386.s: Assembler messages:
md/i386.s:69: Error: suffix or operands invalid for `push'
md/i386.s:70: Error: suffix or operands invalid for `push'
md/i386.s:71: Error: suffix or operands invalid for `push'
md/i386.s:72: Error: suffix or operands invalid for `push'
md/i386.s:77: Error: suffix or operands invalid for `push'
md/i386.s:78: Error: suffix or operands invalid for `push'
md/i386.s:79: Error: suffix or operands invalid for `push'
md/i386.s:81: Error: suffix or operands invalid for `call'
md/i386.s:84: Error: suffix or operands invalid for `pop'
md/i386.s:85: Error: suffix or operands invalid for `pop'
md/i386.s:86: Error: suffix or operands invalid for `pop'
md/i386.s:87: Error: suffix or operands invalid for `pop'
md/i386.s:98: Error: suffix or operands invalid for `push'
md/i386.s:99: Error: suffix or operands invalid for `call'
md/i386.s:100: Error: suffix or operands invalid for `pop'
md/i386.s:102: Error: suffix or operands invalid for `call'
md/i386.s:104: Error: suffix or operands invalid for `push'
md/i386.s:105: Error: suffix or operands invalid for `push'
md/i386.s:106: Error: suffix or operands invalid for `call'
gmake[1]: *** [qt] Error 1
gmake[1]: Leaving directory
`/gpfsm/dnb33/baswartz/bench/NAS_BM_PGK/NAMD/NAMD_2.7b4_Source/charm-6.2.2/m
pi-linux-ifort-icc/tmp/QuickThreads'
Did you try to build net-linux on a 64-bit system? Try net-linux-x86_64
gmake: *** [QUICK_THREADS] Error 1
-------------------------------------------------
Charm++ NOT BUILT. Either cd into mpi-linux-ifort-icc/tmp and try
to resolve the problems yourself, visit
http://charm.cs.uiuc.edu/
for more information. Otherwise, email the developers at
charm AT cs.uiuc.edu

I suspect I am missing something in the charm build... Any Suggestions?

I also attempted to build with:
env MPICXX=mpicxx ./build charm++ mpi-linux-x86_64 ifort --no-build-shared
--with-production >& build.out.2

But that apparently is for Opterons.

As Chao Mei suggested, mpi-linux-x86_64 is the right build target for
your EM64T (64-bit x86) systems, which use the same ISA as Opterons.
Did that build fail? If so, what was the resulting error?

Phil



--
_______________________________________________________
Brent Swartz
Scientific Application Computational Scientist
Software Integration & Visualization Office - Code 610.3
NASA Goddard Space Flight Center

(715)726-1405
Brent.A.Swartz AT nasa.gov
_______________________________________________________




--
_______________________________________________________
Brent Swartz
Scientific Application Computational Scientist
Software Integration & Visualization Office - Code 610.3
NASA Goddard Space Flight Center

(715)726-1405
Brent.A.Swartz AT nasa.gov
_______________________________________________________





--
_______________________________________________________
Brent Swartz
Scientific Application Computational Scientist
Software Integration & Visualization Office - Code 610.3
NASA Goddard Space Flight Center

(715)726-1405
Brent.A.Swartz AT nasa.gov
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