Benchmarking: Coremark

Decompress

root@jph1:~# tar zxvf coremark_v1.0
cd coremark_v1.0

Adjust compilation flags

Seems to be in ./linux64/core_portme.mak

• Change PORT_CFLAGS value to -O3
• Add extra flags to the end of the CFLAGS statement

For example (added -funroll-all-loops --param max-inline-insns-auto=200):

CC = gcc
# Flag: CFLAGS
#       Use this flag to define compiler options. Note, you can add compiler options from the command line using XCFLAGS="other flags"
PORT_CFLAGS = -O3
FLAGS_STR = "$(PORT_CFLAGS) $(XCFLAGS) $(XLFLAGS) $(LFLAGS_END)"
CFLAGS = $(PORT_CFLAGS) -I$(PORT_DIR) -I. -DFLAGS_STR=\"$(FLAGS_STR)\" -funroll-all-loops --param max-inline-insns-auto=200

Run benchmark (single thread)

Run benchmark with make:

root@jph1:~/coremark_v1.0# pwd
/root/coremark_v1.0
root@jph1:~/coremark_v1.0# make

Faster systems

If you have a fast system (faster than a RaspberryPi), increase the number of iterations to increase the test run to give a more meaningful result:

root@jph1:~/coremark_v1.0# make ITERATIONS=10000

32-bit ARM systems

Coremark seems to have an issue when not running in a linux64 environment (e.g. 32-bit ARM). Add a flag to the make command:

root@jph1:~/coremark_v1.0# make PORT_DIR=simple

Run benchmark (multi thread)

root@jph1:~/coremark_v1.0# make XCFLAGS="-DMULTITHREAD=8 -DUSE_PTHREAD"

Results

Coremark V1.0 results

CPU	Freq	Cores	Coremark	Coremark/ MHz	Coremark/ Core	Coremark/ Core/MHz	Parallel Execution	Compile Flags
MIPS
Cavium Octeon II CN6645	2.50GHz	10	25671	10.268	2567	1.0268	10 Threads
Cavium Octeon II CN6645	2.50GHz	10	31172	12.468	3117	1.2468	10 Threads	-O3 -funroll-all-loops --param max-inline-insns-auto=200
ARM
Calxeda Highbank (Cortex A9)	1.40GHz	4	11764	8.403	2941	2.1007	4 Threads
Calxeda Highbank (Cortex A9)	1.40GHz	4	12074	8.624	3018	2.1557	4 Threads	-O3
Calxeda Midway (Cortex A15)	1.50GHz	4	20284	13.523	5071	3.3807	4 Threads
Calxeda Midway (Cortex A15)	1.50GHz	4	22013	14.675	5503	3.6687	4 Threads	-O3
APM XGene1 (Cortex A57)	2.40GHz	8	49304	20.543	6163	2.5679	8 Threads
APM XGene1 (Cortex A57)	2.40GHz	8	54408	22.670	6801	2.8338	8 Threads	-O3
Intel
Intel Atom C2550	2.4GHz	4	26044	10.852	6511	2.7129	4 Threads
Intel Atom C2550	2.4GHz	4	29333	12.222	7333	3.0554	4 Threads	-O3
Intel Atom C2750	2.4GHz	8	50873	21.197	6359	2.6496	8 Threads
Intel Atom C2750	2.4GHz	8	58506	24.378	7313	3.0471	8 Threads	-O3
Intel Xeon E5-2660 v1 (no HT)	2.2GHz	8	91152	41.433	11394	5.1791	8 Threads
Intel Xeon E5-2660 v1 (no HT)	2.2GHz	8	105540	27.973	13192	5.9966	8 Threads	-O3
Intel Xeon E5-2640 v2 (no HT)	2.0GHz	8	96455	48.228	12056	6.0284	8 Threads
Intel Xeon E5-2640 v2 (no HT)	2.0GHz	8	111095	55.548	13886	6.9434	8 Threads	-O3
AMD
AMD Opteron 6380	2.5GHz	16	128439	51.376	8027	3.2110	16 Threads
AMD Opteron 6380	2.5GHz	16	149107	59.643	9319	3.7277	16 Threads	-O3