$ ccl -n -Q -l simple.dx32fsl -e "(benchmark)" -e "(quit)" Benchmarking on Clozure Common Lisp Version 1.3-r12925M (DarwinX8632) *** 32x32 32768 iterations *** (SIMULATE I INITIAL) took 55,795 milliseconds (55.795 seconds) to run with 2 available CPU cores. During that period, 46,516 milliseconds (46.516 seconds) were spent in user mode 5,461 milliseconds (5.461 seconds) were spent in system mode 7,389 milliseconds (7.389 seconds) was spent in GC. 3,625,471,944 bytes of memory allocated. 0 minor page faults, 162 major page faults, 0 swaps. *** 64x64 8192 iterations *** (SIMULATE I INITIAL) took 56,770 milliseconds (56.770 seconds) to run with 2 available CPU cores. During that period, 47,458 milliseconds (47.458 seconds) were spent in user mode 5,493 milliseconds (5.493 seconds) were spent in system mode 7,895 milliseconds (7.895 seconds) was spent in GC. -671,596,600 bytes of memory allocated. 0 minor page faults, 415 major page faults, 0 swaps. *** 128x128 2048 iterations *** (SIMULATE I INITIAL) took 56,988 milliseconds (56.988 seconds) to run with 2 available CPU cores. During that period, 47,706 milliseconds (47.706 seconds) were spent in user mode 5,394 milliseconds (5.394 seconds) were spent in system mode 8,134 milliseconds (8.134 seconds) was spent in GC. -674,840,632 bytes of memory allocated. 0 minor page faults, 227 major page faults, 0 swaps. *** 256x256 512 iterations *** (SIMULATE I INITIAL) took 59,449 milliseconds (59.449 seconds) to run with 2 available CPU cores. During that period, 49,977 milliseconds (49.977 seconds) were spent in user mode 5,424 milliseconds (5.424 seconds) were spent in system mode 10,711 milliseconds (10.711 seconds) was spent in GC. -686,526,520 bytes of memory allocated. 2,206 minor page faults, 5,543 major page faults, 66 swaps. *** 512x512 128 iterations *** (SIMULATE I INITIAL) took 60,505 milliseconds (60.505 seconds) to run with 2 available CPU cores. During that period, 50,792 milliseconds (50.792 seconds) were spent in user mode 5,492 milliseconds (5.492 seconds) were spent in system mode 12,082 milliseconds (12.082 seconds) was spent in GC. -732,947,512 bytes of memory allocated. 0 minor page faults, 837 major page faults, 0 swaps. *** 1024x1024 32 iterations *** (SIMULATE I INITIAL) took 61,707 milliseconds (61.707 seconds) to run with 2 available CPU cores. During that period, 52,318 milliseconds (52.318 seconds) were spent in user mode 5,303 milliseconds (5.303 seconds) were spent in system mode 14,522 milliseconds (14.522 seconds) was spent in GC. -918,550,840 bytes of memory allocated. 0 minor page faults, 820 major page faults, 0 swaps. *** 2048x2048 8 iterations *** (SIMULATE I INITIAL) took 68,117 milliseconds (68.117 seconds) to run with 2 available CPU cores. During that period, 59,534 milliseconds (59.534 seconds) were spent in user mode 4,861 milliseconds (4.861 seconds) were spent in system mode 25,533 milliseconds (25.533 seconds) was spent in GC. 2,634,023,304 bytes of memory allocated. 0 minor page faults, 10,303 major page faults, 0 swaps. > Error: value 16777216 is not of the expected type (UNSIGNED-BYTE 24). > While executing: CCL::MAKE-UARRAY-1, in process listener(1).