mir-cpuid 1.1.2

CPU Characteristics Identification


To use this package, put the following dependency into your project's dependencies section:

dub.json
dub.sdl

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CPU Information

void main()
{
    import std.stdio;
    import cpuid.unified;

    enum fmt = "%14s: %s";

    fmt.writefln("cores", cores);
    fmt.writefln("threads", threads);

    fmt.writefln("data caches", dCache.length);
    fmt.writefln("code caches", iCache.length);
    fmt.writefln("unified caches", uCache.length);

    fmt.writefln("data TLBs", dTlb.length);
    fmt.writefln("code TLBs", iTlb.length);
    fmt.writefln("unified TLBs", uTlb.length);
}

This package also can be used as workaround for core.cpuid Issue 16028.

Documentation

See http://docs.cpuid.dlang.io .

Testing

See all reports.

Run the following command from the project's directory to receive a report about your CPU

dub --single report.d

Please report dub log in a new GitHub issue!

See also output example.

Building a betterC library

BetterC mode works when compiled with LDC only.

dub build --compiler=ldmd2 --build=betterC --build-mode=singleFile --parallel

API Features

  • API was split to unified, target specified, and vendor specified parts.
  • Complex cache topology (number of cores per cache) is supported. This feature is required by ARM CPUs.
  • Translation lookaside buffers are supported. They are used in server and math software, for example cache optimized BLAS requires TLB information.
  • Caches and TLBs are split into three types:
  • Data
  • Instruction (code)
  • Unified (data and code)
  • _cpuid function is available for x86/x86-64 targets.

Implementation Features

  • The library was written completely from scratch.
  • Code is clean and simple.
  • Unions and mir.bitmanip.bitfields are used instead of bit operations.
  • Slim betterC library with extern(C) insterface.

TODO

  • [x] Add information about recent features like AVX2, AVX512F.
  • [ ] Add information about ARM target and ARM vendors.
  • [x] Test a lot of different CPUs.
  • [ ] Extend testing infrastructure.
Authors:
  • Ilya Yaroshenko
Dependencies:
mir-core
Versions:
1.1.2 2018-Nov-13
1.1.1 2018-Oct-27
1.1.0 2018-Oct-27
1.0.0 2018-Sep-26
0.5.4 2018-Sep-26
Show all 14 versions
Download Stats:
  • 0 downloads today

  • 10 downloads this week

  • 24 downloads this month

  • 1773 downloads total

Score:
2.4
Short URL:
mir-cpuid.dub.pm