Online Level-3: Performance CPU-Memory

Performance Test Results for CPU and Memory

The total percentages should be 200% since we are using dual processor machines. Time is given in seconds. Scale is the performance with respect to the standard level3 node: 2PII,400MHz,128MB,100MHZ and expSc is the expected scaling when comparing tact frequencies. CPU2Ex is the CPU usage for 2 executables. CPUL3n is the CPU usage for the complete l3_node package. MEM is the corresponding for memory.

Since in the first tests some idle time of the CPU was observed we have repeated the tests using global tracking in COT and in silicon. The events take order of 5 seconds to process. CPU is by now not at all idle anymore.

Results for the ttbar sample:

                             time  scale  expSc  CPU2Ex  CPUL3n  MEM2Ex MEML3n
 =============================================================================
 2P II,400MHz,128MB,100MHZ   1198      1      1    198%      1%     75%    23%
 2P II,400MHz,512MB,100MHZ   1228  1.025      1    198%      1%     20%     6%
 2PIII,600MHz,512MB,100MHZ    813  0.679  0.667    197%      2%     20%     6%
 2PIII,733MHz,512MB,133MHZ    726  0.606  0.546    197%      2%     20%     6% 

Results for the bbbar sample:

 

                             time  scale  expSc  CPU2Ex  CPUL3n  MEM2Ex MEML3n
 =============================================================================
 TEST HAVE NOT BEEN REPEATED

For reference here are also the old test results. Careful the CPU was partially idle. Results for the ttbar sample:

                             time  scale  expSc  CPU2Ex  CPUL3n  MEM2Ex MEML3n
 =============================================================================
 2P II,400MHz,128MB,100MHZ   1580      1      1    137%     41%     70%    23%
 2P II,400MHz,512MB,100MHZ   1600  1.013      1    137%     45%     17%     6%
 2PIII,600MHz,512MB,100MHZ   1210  0.766  0.667    133%     34%     17%     6%
 2PIII,733MHz,512MB,133MHZ   1010  0.639  0.546    124%     26%     17%     6% 

Results for the bbbar sample:

 

                             time  scale  expSc  CPU2Ex  CPUL3n  MEM2Ex MEML3n
 =============================================================================
 2P II,400MHz,128MB,100MHZ   2060      1      1    144%     30%     66%    23% 
 2P II,400MHz,512MB,100MHZ   2070  1.005      1    144%     30%     17%     6% 
 2PIII,600MHz,512MB,100MHZ   1580  0.767  0.667    136%     24%     18%     6% 
 2PIII,733MHz,512MB,133MHZ   1333  0.647  0.546    121%     18%     17%     6%