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# threads - mtbatch

This folder provides an object for running multi-threading benchmarks.

The following tests *independent and-parallelism* are available, based on
individual multi-threading examples:

- `primes` (defaults to 16 threads, starting list size of 10000, and 10 multiples)
- `primes(MaxThreads, StartSize, Multiples)`

- `msort` (defaults to 16 threads, starting list size 5000, and 10 multiples)
- `msort(MaxThreads, Size, Multiples)`

- `qsort` (defaults to 16 threads, starting list size 5000, and 10 multiples)
- `qsort(MaxThreads, Size, Multiples)`

- `fib` (defaults to 16 threads and the [20,27] interval)
- `fib(MaxThreads, Lower, Upper)`

- `hanoi` (defaults to 16 threads and the [20,27] interval)
- `hanoi(MaxThreads, Lower, Upper)`

- `tak` (defaults to 243 threads and the [7,11] interval)
- `tak(MaxThreads, Lower, Upper)` (use a power of 3 as argument: 1, 3, 9, 27, 81, ...)

- `fft` (defaults to 16 threads and the [10,16] interval)
- `fft(MaxThreads, Lower, Upper)`

- `integration` (defaults to 16 threads)
- `integration(MaxThreads)`

- `integration2d` (defaults to 16 threads)
- `integration2d(MaxThreads)` (use a power of 4 as argument: 1, 4, 16, 64, 256, ...)

There's also a test of *competitive or-parallelism* based on the `searching`
example:

- `search`

For the same backend Prolog compiler, the benchmark results can show
significant variation depending on the operating-system and if you're
using a 32 bits or a 64 bits version.

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

```logtalk
%versions
```

Start by loading the example:

```logtalk
logtalk_load(mtbatch(loader)).
```

Run all tests the default number of times (10):

```logtalk
mtbatch::run.
```

Run all tests (average of 20 times for each test):

```logtalk
mtbatch::run(20).
```

Run only the primes benchmark test (average of 10 times):

```logtalk
mtbatch::run(primes, 10).
```
