Hi all,
I've run simulation speed tests for the 3 different flavors of GHDL
(mcode, llvm, gcc) and for 3 versions of the Xilinx Vivado simulator,
XSim (2015.1, 2015.2, 2015.3).
Launched on a x86_64 GNU/Linux system.
I used various applications generated with an HLS tool. The VHDL code
itself is not the point of interest, only simulation speed is.
Attached is the raw result file.
General trend:
- mcode is 2 times slower than gcc and llvm flavors at simulation, but
it launches immediately, which makes it ideal for small-scale
simulations.
- Flavors llvm and gcc present roughly the same perfs.
- Xilinx Vivado simulators are much slower than llvm and gcc flavors of
GHDL. It even seems that the newest version, 2015.3, is a huge
regression compared to version 2015.2.
Besides, for people who are interested in doing tests:
I run ArchLinux distibution and I prepared packages for the 3 GHDL
flavors. All are built from hg source.
mcode https://aur.archlinux.org/packages/ghdl-mcode-hg/
llvm https://aur.archlinux.org/packages/ghdl-llvm-hg/
gcc https://aur.archlinux.org/packages/ghdl-hg/
Adrien
Execution time, in seconds
| idct | mjpeg | adpcm | aes | bf | gsm |
mips | motion | sha | dfadd | dfmul | dfdiv | dfsin || total |
===================================================================================================================================================
ghdl-mcode | 0.600 | 313 | 39.5 | 4.13 | 68.5 | 3.52 |
1.05 | 1.96 | 56.5 | 0.524 | 0.285 | 5.42 | 213 || 708 |
===================================================================================================================================================
analy | 1.47 | 10.1 | 8.04 | 3.52 | 2.78 | 4.15 |
1.78 | 2.56 | 1.48 | 3.70 | 2.27 | 3.71 | 9.14 || |
ghdl-llvm elabo | 0.190 | 0.638 | 0.436 | 0.252 | 0.248 | 0.317 |
0.294 | 0.291 | 0.204 | 0.369 | 0.299 | 0.350 | 0.609 || |
run | 0.182 | 118 | 14.2 | 1.50 | 27.4 | 1.23 |
0.307 | 0.681 | 24.8 | 0.077 | 0.018 | 1.86 | 76.7 || |
total | 1.84 | 129 | 22.7 | 5.27 | 30.4 | 5.70 |
2.38 | 3.53 | 26.5 | 4.15 | 2.59 | 4.92 | 86.4 || 325 |
===================================================================================================================================================
analy | 1.82 | 8.59 | 7.51 | 3.94 | 3.21 | 4.60 |
2.39 | 3.06 | 1.79 | 4.39 | 3.21 | 4.25 | 8.49 || |
ghdl-gcc elabo | 0.164 | 0.530 | 0.359 | 0.219 | 0.202 | 0.274 |
0.280 | 0.268 | 0.168 | 0.345 | 0.274 | 0.316 | 0.569 || |
run | 0.176 | 123 | 14.1 | 1.56 | 27.3 | 1.22 |
0.313 | 0.654 | 22.2 | 0.081 | 0.017 | 1.79 | 76.1 || |
total | 2.16 | 132 | 22.0 | 5.72 | 30.7 | 6.09 |
2.98 | 3.98 | 24.2 | 4.82 | 3.50 | 6.36 | 85.2 || 330 |
===================================================================================================================================================
===================================================================================================================================================
analy | 0.297 | 0.524 | 0.664 | 0.354 | 0.370 | 0.367 |
0.325 | 0.345 | 0.322 | 0.515 | 0.479 | 0.578 | 0.769 || |
XSim 15.1 elabo | 7.61 | 22.1 | 12.8 | 6.68 | 5.01 | 6.25 |
5.20 | 4.52 | 4.89 | 4.95 | 4.73 | 5.06 | 6.70 || |
run | 4.20 | 203 | 34.7 | 6.05 | 42.8 | 5.74 |
4.22 | 4.66 | 31.4 | 3.82 | 4.24 | 7.43 | 176 || |
total | 12.1 | 226 | 48.2 | 13.1 | 48.2 | 12.4 |
9.75 | 9.53 | 36.6 | 9.29 | 9.45 | 13.1 | 183 || 631 |
===================================================================================================================================================
analy | 0.298 | 0.545 | 0.630 | 0.347 | 0.373 | 0.374 |
0.335 | 0.351 | 0.320 | 0.520 | 0.470 | 0.567 | 0.753 || |
XSim 15.2 elabo | 2.42 | 18.8 | 11.1 | 4.50 | 2.78 | 3.94 |
2.98 | 2.38 | 2.68 | 2.74 | 2.53 | 2.88 | 4.67 || |
run | 1.52 | 202 | 32.0 | 3.68 | 39.9 | 3.40 |
1.83 | 2.33 | 29.0 | 1.47 | 1.34 | 5.01 | 172 || |
total | 4.24 | 221 | 43.7 | 8.53 | 40.1 | 7.71 |
5.15 | 5.06 | 32.0 | 4.73 | 4.34 | 8.46 | 177 || 562 |
===================================================================================================================================================
analy | 0.279 | 0.512 | 0.626 | 0.329 | 0.361 | 0.365 |
0.316 | 0.355 | 0.302 | 0.503 | 0.471 | 0.557 | 0.768 || |
XSim 15.3 elabo | 2.04 | 19.1 | 11.2 | 4.49 | 2.41 | 4.27 |
2.45 | 1.71 | 2.27 | 3.21 | 2.38 | 3.28 | 5.29 || |
run | 1.66 | 386 | 56.6 | 5.85 | 76.3 | 5.18 |
2.23 | 3.11 | 54.3 | 1.52 | 1.28 | 8.72 | 325 || |
total | 3.98 | 406 | 68.4 | 10.7 | 79.1 | 9.82 |
5.00 | 5.18 | 56.9 | 5.23 | 4.13 | 12.6 | 331 || 998 |
===================================================================================================================================================
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