Four Computer Case

-np 1 **********************************************************************
[gcf@gridfarm007 gcf]$ ./runnp1
Halting lamd

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-----------------------------------------------------------------------------
It seems that there is no lamd running on this host, which indicates
that the LAM/MPI runtime environment is not operating.  The LAM/MPI
runtime environment is necessary for the "lamhalt" command.

Please run the "lamboot" command the start the LAM/MPI runtime
environment.  See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Cleaning up

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

 
 ---------------------
Compiling TestProg
Executing the code with -np 1
Processor gridfarm007.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 10000 grid points is     3.1415926535898100e+00 
The error or the discrepancy between exact and computed value of Pi :    1.6875389974302379e-14
-------------------------------------------------

real    0m0.500s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 1
Processor gridfarm007.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 1000000 grid points is     3.1415926535896550e+00 
The error or the discrepancy between exact and computed value of Pi :    1.3811174426336947e-13
-------------------------------------------------

real    0m0.660s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 1
Processor gridfarm007.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 10000000 grid points is     3.1415926535901972e+00 
The error or the discrepancy between exact and computed value of Pi :    4.0412118096355698e-13
-------------------------------------------------

real    0m2.052s
user    0m0.000s
sys     0m0.000s

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-np 4 **********************************************************************
[gcf@gridfarm007 gcf]$ ./runnp4
Halting lamd

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-----------------------------------------------------------------------------
It seems that there is no lamd running on this host, which indicates
that the LAM/MPI runtime environment is not operating.  The LAM/MPI
runtime environment is necessary for the "lamhalt" command.

Please run the "lamboot" command the start the LAM/MPI runtime
environment.  See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Cleaning up

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------

real    0m0.543s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------

real    0m0.698s
user    0m0.000s
sys     0m0.010s
 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------

real    0m2.291s
user    0m0.000s
sys     0m0.010s

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University


-np 8 **********************************************************************

[gcf@gridfarm007 gcf]$ ./runnp8
Halting lamd

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-----------------------------------------------------------------------------
It seems that there is no lamd running on this host, which indicates
that the LAM/MPI runtime environment is not operating.  The LAM/MPI
runtime environment is necessary for the "lamhalt" command.

Please run the "lamboot" command the start the LAM/MPI runtime
environment.  See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Cleaning up

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

 
 ---------------------
Compiling TestProg
Executing the code with -np 8
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
-------------------------------------------------
Processor gridfarm005.ucs.indiana.edu checking in
The computed Pi of the integral for 80000 grid points is     3.1415926535897891e+00 
The error or the discrepancy between exact and computed value of Pi :    3.9968028886505635e-15
-------------------------------------------------

real    0m0.548s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 8
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 8000000 grid points is     3.1415926535898171e+00 
The error or the discrepancy between exact and computed value of Pi :    2.3980817331903381e-14
-------------------------------------------------

real    0m0.733s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 8
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 80000000 grid points is     3.1415926535899299e+00 
The error or the discrepancy between exact and computed value of Pi :    1.3677947663381929e-13
-------------------------------------------------

real    0m2.260s
user    0m0.000s
sys     0m0.010s

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-np 16 **********************************************************************

[gcf@gridfarm007 gcf]$ ./runnp16
Halting lamd

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-----------------------------------------------------------------------------
It seems that there is no lamd running on this host, which indicates
that the LAM/MPI runtime environment is not operating.  The LAM/MPI
runtime environment is necessary for the "lamhalt" command.

Please run the "lamboot" command the start the LAM/MPI runtime
environment.  See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Cleaning up

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

 
 ---------------------
Compiling TestProg
Executing the code with -np 16
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 160000 grid points is     3.1415926535897918e+00 
The error or the discrepancy between exact and computed value of Pi :    1.3322676295501878e-15
-------------------------------------------------

real    0m0.587s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 16
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 16000000 grid points is     3.1415926535897829e+00 
The error or the discrepancy between exact and computed value of Pi :    1.0214051826551440e-14
-------------------------------------------------

real    0m0.881s
user    0m0.010s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 16
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
-------------------------------------------------
The computed Pi of the integral for 160000000 grid points is     3.1415926535898424e+00 
The error or the discrepancy between exact and computed value of Pi :    4.9293902293356950e-14
-------------------------------------------------

real    0m3.568s
user    0m0.000s
sys     0m0.000s

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University


-np 4 MPI times 10 *****************************************************************
[gcf@gridfarm007 gcf]$ ./runnp4
Halting lamd

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

-----------------------------------------------------------------------------
It seems that there is no lamd running on this host, which indicates
that the LAM/MPI runtime environment is not operating.  The LAM/MPI
runtime environment is necessary for the "lamhalt" command.

Please run the "lamboot" command the start the LAM/MPI runtime
environment.  See the LAM/MPI documentation for how to invoke
"lamboot" across multiple machines.
-----------------------------------------------------------------------------
Cleaning up

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University

 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
-------------------------------------------------
0 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
1 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
2 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
3 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
4 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
5 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
6 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
7 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
8 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------
-------------------------------------------------
9 The computed Pi of the integral for 40000 grid points is     3.1415926535897909e+00 
The error or the discrepancy between exact and computed value of Pi :    2.2204460492503131e-15
-------------------------------------------------

real    0m0.555s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
0 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
1 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
2 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
3 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
4 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
5 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
6 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
7 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
8 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------
-------------------------------------------------
9 The computed Pi of the integral for 4000000 grid points is     3.1415926535897509e+00 
The error or the discrepancy between exact and computed value of Pi :    4.2188474935755949e-14
-------------------------------------------------

real    0m2.267s
user    0m0.000s
sys     0m0.000s
 
 ---------------------
Compiling TestProg
Executing the code with -np 4
Processor gridfarm007.ucs.indiana.edu checking in
Processor gridfarm005.ucs.indiana.edu checking in
Processor gridfarm006.ucs.indiana.edu checking in
Processor gridfarm004.ucs.indiana.edu checking in
-------------------------------------------------
0 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
1 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
2 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
3 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
4 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
5 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
6 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
7 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
8 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------
-------------------------------------------------
9 The computed Pi of the integral for 40000000 grid points is     3.1415926535899525e+00 
The error or the discrepancy between exact and computed value of Pi :    1.5942802633617248e-13
-------------------------------------------------

real    0m17.899s
user    0m0.000s
sys     0m0.010s

LAM 6.5.9/MPI 2 C++/ROMIO - Indiana University