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Re^2: Firefly's parallel calculation: can't get fully CPU load

Alexey
alexfarlong56@gmail.com

The result of FIREFLY-8 is the following:
1 thread  - 25% CPU load (total 25)
2 threads - 25+25% CPU load (total 50)
3 threads - 25+12+13% CPU load (total 50)
4 threads - 25+8+8+9% CPU load (total 50)

Its output file contains the following text from the start of the file:

============================================================
                  Grand Master is running on host MAIN
                  rank #     1 is running on host MAIN
                  rank #     2 is running on host MAIN
                  rank #     3 is running on host MAIN

...
[title block, framed with asteriks, is skipped]
...

Core i7    / Win32  Firefly version running under Windows NT
Running on Intel CPU:  Brand ID  0, Family  6, Model  42, Stepping  7
CPU Brand String    :  Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz        
CPU Features        :  CMOV, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, HTT, MWAIT, EM64T
Data cache size     :  L1 32 KB, L2  256 KB, L3  3072 KB
max    # of   cores/package :   8
max    # of threads/package :  16
max     cache sharing level :  16
actual # of   cores/package :   2
actual # of threads/package :   4
actual # of threads/core    :   2
Operating System successfully passed SSE support test.
Operating System supports AVX/FMA.


PARALLEL VERSION (UNIFIED) RUNNING USING    4 PROCESSES (NODES)

EXECUTION OF FIREFLY BEGUN 15:21:19 18-MAR-2013    

           ECHO OF THE FIRST FEW INPUT CARDS -
...
[skipped]
...
  99000000 WORDS OF MEMORY AVAILABLE

This job is executing on     1 unique host(s)
Minimum number of processes per host is:    4
Maximum number of processes per host is:    4

Warning: HTT is enabled, bitmask of physically unique cores is 0x0000000A

SMT aware parts of program will use              2 threads.

Creating thread pool to serve up to            128 threads.

Activating Call64 option.

Using 64-bit DGEMM by default.


Loading P2P interface library... loaded successfully (version 1.9).
Initializing global P2P interface... topology done.
============================================================



Version of PC-GAMESS is 6, June 1999. Its output file starts with this:

============================================================
Pentium    / Win32  PC GAMESS version running under Windows NT
Running on Intel CPU:  Brand ID  0, Family  6, Model 10, Stepping  7
CPU Brand String    :  Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz        
CPU Features        :  CMOV, MMX, SSE, SSE2, SSE3, SSE4, EM64T                
Data cache size     :  L1 32 KB, L2  256 KB, L3 3072 KB
# of cores/package  :  8
Operating System successfully passed SSE support test.

Warning: this PC GAMESS version was optimized for a different CPU type!
The overall performance degradation is expected.
For better performance, use Pentium III optimized PC GAMESS version.


PARALLEL VERSION (UNIFIED) RUNNING WITH   4 NODES    
============================================================

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