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https://github.com/roc-lang/roc.git
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make dec bench functional again and much more robust
This commit is contained in:
Brendan Hansknecht
parent
a564876631
commit
070e556c71
1 changed files with 98 additions and 136 deletions
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@ -5,170 +5,132 @@ const Timer = time.Timer;
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const RocStr = @import("../src/str.zig").RocStr;
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const RocDec = @import("../src/dec.zig").RocDec;
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fn roc_alloc(_: usize, _: u32) callconv(.C) ?*anyopaque {
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@panic("Not needed for dec benchmark");
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}
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fn roc_panic(_: *anyopaque, _: u32) callconv(.C) void {
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@panic("Not needed for dec benchmark");
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}
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comptime {
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@export(roc_alloc, .{ .name = "roc_alloc", .linkage = .Strong });
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@export(roc_panic, .{ .name = "roc_panic", .linkage = .Strong });
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}
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var timer: Timer = undefined;
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pub fn main() !void {
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const stdout = std.io.getStdOut().writer();
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try stdout.print("Warning: Timer seems to step in units of 41ns\n\n", .{});
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timer = try Timer.start();
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try stdout.print("7 additions took ", .{});
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try avg_runs(add7);
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const n = 10000;
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try stdout.print("7 subtractions took ", .{});
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try avg_runs(sub7);
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// This number are very close to 1 to avoid over and underflow.
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const str1 = "1.00123";
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const f1 = 1.00123;
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const dec1 = RocDec.fromStr(RocStr.init(str1, 3)).?;
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try stdout.print("7 multiplications took ", .{});
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try avg_runs(mul7);
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try stdout.print("Dec:\n", .{});
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try stdout.print("{} additions took ", .{n});
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const decAdd = try avg_runs(RocDec, n, RocDec.add, dec1);
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try stdout.print("7 divisions took ", .{});
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try avg_runs(div7);
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try stdout.print("{} subtractions took ", .{n});
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const decSub = try avg_runs(RocDec, n, RocDec.sub, dec1);
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try stdout.print("{} multiplications took ", .{n});
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const decMul = try avg_runs(RocDec, n, RocDec.mul, dec1);
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try stdout.print("{} divisions took ", .{n});
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const decDiv = try avg_runs(RocDec, n, RocDec.div, dec1);
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try stdout.print("\n\nF64:\n", .{});
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try stdout.print("{} additions took ", .{n});
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const f64Add = try avg_runs(f64, n, addF64, f1);
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try stdout.print("{} subtractions took ", .{n});
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const f64Sub = try avg_runs(f64, n, subF64, f1);
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try stdout.print("{} multiplications took ", .{n});
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const f64Mul = try avg_runs(f64, n, mulF64, f1);
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try stdout.print("{} divisions took ", .{n});
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const f64Div = try avg_runs(f64, n, divF64, f1);
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try stdout.print("\n\nDec/F64:\n", .{});
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try stdout.print("addition: {d:0.2}\n", .{@intToFloat(f64, decAdd) / @intToFloat(f64, f64Add)});
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try stdout.print("subtraction: {d:0.2}\n", .{@intToFloat(f64, decSub) / @intToFloat(f64, f64Sub)});
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try stdout.print("multiplication: {d:0.2}\n", .{@intToFloat(f64, decMul) / @intToFloat(f64, f64Mul)});
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try stdout.print("division: {d:0.2}\n", .{@intToFloat(f64, decDiv) / @intToFloat(f64, f64Div)});
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}
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fn avg_runs(func: fn() u64) !void {
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fn avg_runs(comptime T: type, comptime n: usize, op: fn (T, T) T, v: T) !u64 {
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const stdout = std.io.getStdOut().writer();
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var first_run = func();
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var lowest = first_run;
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var highest = first_run;
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var sum = first_run;
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// 31 runs
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var runs = [_]u64{ first_run, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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var next_run: usize = 1; // we already did first_run
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const repeats = 1000;
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var runs = [_]u64{0} ** repeats;
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while (next_run < runs.len) {
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const run = func();
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lowest = std.math.min(lowest, run);
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highest = std.math.max(highest, run);
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runs[next_run] = run;
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next_run += 1;
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var i: usize = 0;
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while (i < repeats) : (i += 1) {
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runs[i] = run(T, n, op, v);
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}
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std.sort.sort(u64, &runs, {}, comptime std.sort.asc(u64));
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const median = runs[runs.len / 2];
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const highest = runs[runs.len - 1];
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const lowest = runs[0];
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try stdout.print("{}ns (lowest: {}ns, highest: {}ns)\n", .{median, lowest, highest});
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try stdout.print("{}ns (lowest: {}ns, highest: {}ns)\n", .{ median, lowest, highest });
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return median;
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}
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fn add7() u64 {
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var str1 = RocStr.init("1.2", 3);
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const dec1 = RocDec.fromStr(str1).?;
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var str2 = RocStr.init("3.4", 3);
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const dec2 = RocDec.fromStr(str2).?;
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fn run(comptime T: type, comptime n: usize, op: fn (T, T) T, v: T) u64 {
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var a = v;
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timer.reset();
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var a = dec1.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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a = a.add(dec1);
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a = a.add(dec2);
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// Split into outer and inner loop to avoid breaking comptime.
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comptime var outer = n / 500;
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comptime var inner = std.math.min(n, 500);
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var i: usize = 0;
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while (i < outer) : (i += 1) {
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comptime var j = 0;
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inline while (j < inner) : (j += 1) {
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a = op(a, v);
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// Clobber a to avoid optimizations and removal of dead code.
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asm volatile (""
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:
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: [a] "r,m" (&a),
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: "memory"
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);
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}
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}
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comptime var rem = n % 500;
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i = 0;
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inline while (i < rem) : (i += 1) {
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a = op(a, v);
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// Clobber a to avoid optimizations and removal of dead code.
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asm volatile (""
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:
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: [a] "r,m" (&a),
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: "memory"
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);
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}
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return timer.read();
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}
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fn sub7() u64 {
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var str1 = RocStr.init("1.2", 3);
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const dec1 = RocDec.fromStr(str1).?;
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var str2 = RocStr.init("3.4", 3);
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const dec2 = RocDec.fromStr(str2).?;
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timer.reset();
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var a = dec1.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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a = a.sub(dec1);
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a = a.sub(dec2);
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return timer.read();
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fn addF64(x: f64, y: f64) f64 {
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return x + y;
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}
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fn mul7() u64 {
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var str1 = RocStr.init("1.2", 3);
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const dec1 = RocDec.fromStr(str1).?;
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var str2 = RocStr.init("3.4", 3);
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const dec2 = RocDec.fromStr(str2).?;
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timer.reset();
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var a = dec1.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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a = a.mul(dec1);
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a = a.mul(dec2);
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return timer.read();
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fn subF64(x: f64, y: f64) f64 {
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return x - y;
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}
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fn div7() u64 {
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var str1 = RocStr.init("1.2", 3);
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const dec1 = RocDec.fromStr(str1).?;
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var str2 = RocStr.init("3.4", 3);
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const dec2 = RocDec.fromStr(str2).?;
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timer.reset();
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var a = dec1.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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a = a.div(dec1);
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a = a.div(dec2);
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return timer.read();
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fn mulF64(x: f64, y: f64) f64 {
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return x * y;
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}
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fn divF64(x: f64, y: f64) f64 {
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return x / y;
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}
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