Hi everybody,
I tried to submit a single 'long double' from an amd64 architecture to
a ppc, from an amd64 to a sparc machine and from ppc to sparc. The
testprogram and the results are shown below. All other basic datatypes
I have tested are working fine with heterogenous communication. Does
anybody have an idea? I am using openMPI 1.2.4.
Testprogramm:
#include <mpi.h>
#include <iostream>
int main(int argc, char *argv[])
{
int me, numprocs;
long double senddata = 3.14;
long double recvdata;
MPI_Status status;
MPI_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
MPI_Comm_rank(MPI_COMM_WORLD, &me);
if(me==0)
{
std::cout << "Long double to send: " << senddata << std::endl;
MPI_Send(&senddata, 1, MPI_LONG_DOUBLE, 1, 123, MPI_COMM_WORLD);
}
else
{
MPI_Recv(&recvdata, 1, MPI_LONG_DOUBLE, 0, 123, MPI_COMM_WORLD, &status);
std::cout << "Long double received: " << recvdata << std::endl;
}
MPI_Finalize();
}
--
Output from amd64 to ppc:
unpack there is still room in the input buffer 8 bytes
Long double received: 8.19027e+3364
Long double to send: 3.14
Output from amd64 to sparc:
Long double to send: 3.14
[hannibal:17063] *** An error occurred in MPI_Recv
[hannibal:17063] *** on communicator MPI_COMM_WORLD
[hannibal:17063] *** MPI_ERR_TRUNCATE: message truncated
[hannibal:17063] *** MPI_ERRORS_ARE_FATAL (goodbye)
mpirun noticed that job rank 0 with PID 21916 on node murdock exited
on signal 15 (Terminated).
Output from ppc to sparc:
Long double to send: 3.14
Long double received: 1146.88
*********************************************************
Information of the amd64 machine:
configure:
./configure --prefix=/usr/local/ CFLAGS=-m32 CXXFLAGS=-m32 FFLAGS=-m32
FCFLAGS=-m32 --with-wrapper-cflags=-m32 --with-wrapper-cxxflags=-m32
--with-wrapper-fflags=-m32 --with-wrapper-fcflags=-m32
uname -a:
Linux hannibal 2.6.22-14-server #1 SMP Tue Dec 18 05:52:24 UTC 2007
x86_64 GNU/Linux
less /proc/cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 275
stepping : 2
cpu MHz : 2193.774
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 4390.91
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 275
stepping : 2
cpu MHz : 2193.774
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 4387.61
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 2
************************************************************
information of the ppc:
configure:
./configure --prefix=/usr/local --enable-static
--enable-ltdl-convenience --no-create --no-recursion
uname -a:
Linux baracus 2.6.18-5-powerpc #1 Sat Dec 22 21:05:48 UTC 2007 ppc GNU/Linux
less /proc/cpuinfo:
processor : 0
cpu : 7410, altivec supported
temperature : 23-25 C (uncalibrated)
clock : 533.333332MHz
revision : 0.3 (pvr 800c 1103)
bogomips : 66.30
timebase : 33290001
platform : PowerMac
machine : PowerMac3,4
motherboard : PowerMac3,4 MacRISC2 MacRISC Power Macintosh
detected as : 69 (PowerMac G4 Silver)
pmac flags : 00000010
L2 cache : 1024K unified
pmac-generation : NewWorld
************************************************************
information of the sparc:
configure:
./configure CFLAGS=-mv8plus CXXFLAGS=-mv8plus FFLAGS=-mv8plus
FCFLAGS=-mv8plus --prefix=/usr/local --enable-static
--enable-ltdl-convenience --no-create --no-recursion
uname -a:
Linux murdock 2.6.22-14-sparc64-smp #1 SMP Tue Dec 18 05:40:10 UTC
2007 sparc64 GNU/Linux
less /proc/cpuinfo:
cpu : TI UltraSparc III (Cheetah)
fpu : UltraSparc III integrated FPU
prom : OBP 4.16.4 2004/12/18 05:18
type : sun4u
ncpus probed : 2
ncpus active : 2
D$ parity tl1 : 0
I$ parity tl1 : 0
Cpu0ClkTck : 000000002cb41780
Cpu1ClkTck : 000000002cb41780
MMU Type : Cheetah
State:
CPU0: online
CPU1: online
Thanks in advance for your help
--
Viele Grüße / Kind regards
Patrick Heckeler
Teckstr. 6
72074 Tübingen
Germany
Mobil: +49172 / 719 23 24
email: pheckeler [at] gmail [dot] com
skype: p_heckeler
ICQ: 200910972
