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No, not on a laptop with anything like a comparable number of cores.

Any x86 or Apple Silicon laptop that can match the DC-ROMA II in QEMU will need around three times as many cores -- if the task even scales to that many cores -- and will cost a lot more.

I tried compiling GCC 13 on my i9-13900HX laptop with 24 cores, and on Milk-V Megrez which is the same chip but only one of them (4 cores, not 8):

on Megrez:

    real    260m14.453s
    user    872m5.662s
    sys     32m13.826s

On docker/QEMU on i9:

    real    209m15.492s
    user    2848m3.082s
    sys     29m29.787s
Only just 25% faster on the x86 laptop. Compared to an 8 core RISC-V it would be slower.

And 3.2x more CPU time on the x86 with QEMU than on the RISC-V natively, so you'd need that many more "performance" cores than the either this RISC-V laptop has RISC-V.

Or build Linux kernel 7503345ac5f5 (almost exactly a year old at this point) using RISC-V defconfig:

i9-13900HX docker/qemu

    real    19m12.787s
    user    583m44.139s
    sys     10m3.000s
Ryzen 5 4500U laptop docker/qemu (Zen2 6 cores, Win11)

    real    143m20.069s
    user    820m26.988s
    sys     24m33.945s
Mac Mini M1 docker/qemu (4P + 4E cores)

    real    69m16.520s
    user    531m47.874s
    sys     12m28.567s
VisionFive 2 (4x U74 in-order cores @1.5 GHz, similar to RPi 3)

    real    67m35.189s
    user    249m55.469s
    sys     13m35.877s
Milk-V Megrez (4x P550 cores @1.8 GHz)

    real    42m12.414s
    user    149m5.034s
    sys     11m33.624s
The cheap (~$50) VisionFive 2 is the same speed as an M1 Mac with qemu, or twice as fast as the 6 core Zen 2).

The 4 core Megrez takes around twice as long as the 24 core i9 with qemu. Eight of the same cores in the DC-Roma II will match the 24 core i9 and be more than three times faster than the 8 core M1 Mac.



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