Rainbow: An Operating System for Software-Hardware Multitasking on Dynamically Partially Reconfigurable FPGAs

Table 8

HW tasks size of bitstreams and reconfiguration/readback times.

HW task	Bitstream size (KB)			Time (us)
	Primary bitstrm	Secondary bitstrm (logic)	Secondary bitstrm (mem.)	Reconfig. (alloc. only)	Reconfig.; (alloc. + reinit)	Reinit. only	Readback (dealloc)
IDCT MSG SW-HW and HW-HW (×64)	633.38	68.94	20.56	2066.79	2126.57	287.32	119.33
IDCT FIFO SW-HW and HW-HW (×64)	633.38	72.3	19.22	2071.27	2128.88	289.77	118.49
IDCT MEM-BC HW-HW (×64)	633.38	70.62	23.59	2049.29	2126.99	287.67	121.92
IDCT MEM-BC SW-HW (×64)	633.38	69.27	22.58	2057.2	2135.25	296.21	124.79
IDCT MEM-REG SW-HW (×64)	633.38	68.27	19.22	2048.87	2117.05	277.66	119.54
SHA FIFO SW-HW (×16)	633.38	55.5	18.88	2006.66	2063.5	223.62	119.61
SHA FIFO SW-HW (×32)	633.38	51.8	20.23	2011.84	2073.86	234.4	121.36
SHA FIFO SW-HW (×64)	633.38	54.16	19.89	2011	2073.09	233.98	123.11
IDCT TB MSG HW-HW (×64)	229.93	18.55	12.16	789.33	823.26	105.46	50.58
IDCT TB FIFOHW-HW (×64)	229.93	17.88	12.16	780.05	821.42	103.57	51.21
IDCT TB MEM-BC HW-HW (×64)	229.93	18.55	13.17	786.84	826.39	108.61	54.51