Benchmarking on Clozure Common Lisp Version 1.4-r13131M  (DarwinX8664)
*** 32x32 32768 iterations ***
(SIMULATE I INITIAL W H) took 6,124,198 microseconds (6.124198 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,051,602 microseconds (6.051602 seconds) were spent in user mode
                    21,042 microseconds (0.021042 seconds) were spent in system mode
10,374 microseconds (0.010374 seconds) was spent in GC.
 34,078,720 bytes of memory allocated.
*** 64x64 8192 iterations ***
(SIMULATE I INITIAL W H) took 6,083,572 microseconds (6.083572 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,005,587 microseconds (6.005587 seconds) were spent in user mode
                    20,101 microseconds (0.020101 seconds) were spent in system mode
10,637 microseconds (0.010637 seconds) was spent in GC.
 33,685,504 bytes of memory allocated.
*** 128x128 2048 iterations ***
(SIMULATE I INITIAL W H) took 6,121,979 microseconds (6.121979 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,064,101 microseconds (6.064101 seconds) were spent in user mode
                    20,998 microseconds (0.020998 seconds) were spent in system mode
11,665 microseconds (0.011665 seconds) was spent in GC.
 33,587,200 bytes of memory allocated.
*** 256x256 512 iterations ***
(SIMULATE I INITIAL W H) took 6,210,514 microseconds (6.210514 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,074,425 microseconds (6.074425 seconds) were spent in user mode
                    35,544 microseconds (0.035544 seconds) were spent in system mode
20,125 microseconds (0.020125 seconds) was spent in GC.
 33,562,624 bytes of memory allocated.
 0 minor page faults, 387 major page faults, 0 swaps.
*** 512x512 128 iterations ***
(SIMULATE I INITIAL W H) took 6,167,674 microseconds (6.167674 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,054,184 microseconds (6.054184 seconds) were spent in user mode
                    19,651 microseconds (0.019651 seconds) were spent in system mode
17,931 microseconds (0.017931 seconds) was spent in GC.
 33,556,480 bytes of memory allocated.
 0 minor page faults, 194 major page faults, 0 swaps.
*** 1024x1024 32 iterations ***
(SIMULATE I INITIAL W H) took 6,105,398 microseconds (6.105398 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,050,195 microseconds (6.050195 seconds) were spent in user mode
                    12,455 microseconds (0.012455 seconds) were spent in system mode
18,087 microseconds (0.018087 seconds) was spent in GC.
 33,554,944 bytes of memory allocated.
 0 minor page faults, 967 major page faults, 0 swaps.
*** 2048x2048 8 iterations ***
(SIMULATE I INITIAL W H) took 6,113,421 microseconds (6.113421 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,046,997 microseconds (6.046997 seconds) were spent in user mode
                    24,187 microseconds (0.024187 seconds) were spent in system mode
17,440 microseconds (0.017440 seconds) was spent in GC.
 33,554,560 bytes of memory allocated.
 0 minor page faults, 4,096 major page faults, 0 swaps.
*** 4096x4096 2 iterations ***
(SIMULATE I INITIAL W H) took 6,176,237 microseconds (6.176237 seconds) to run 
                    with 2 available CPU cores.
During that period, 6,121,473 microseconds (6.121473 seconds) were spent in user mode
                    27,102 microseconds (0.027102 seconds) were spent in system mode
90,707 microseconds (0.090707 seconds) was spent in GC.
 33,554,464 bytes of memory allocated.
 0 minor page faults, 6,176 major page faults, 0 swaps.