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Merged
acandershock merged 4 commits into from
Mar 28, 2026
Merged

Benchmarks+results #71

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57552ff
added dim_string parsing to support a range for input size
tdehoff Mar 28, 2026
e28098d
H100 level 1 results
tdehoff Mar 28, 2026
ae4bf15
AMD results
tdehoff Mar 28, 2026
2476f25
A100 results
tdehoff Mar 28, 2026
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72 changes: 51 additions & 21 deletions bench-level1.mojo
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Original file line number Diff line number Diff line change
Expand Up @@ -22,17 +22,46 @@ struct RunParams:
var dtype_str: String
var sizes: List[Int]
var iters: Int
var dim_str: String

fn __init__(out self):
self.routines = List[String]()
self.dtype_str = String("all")
self.sizes = List[Int]()
self.iters = 100
self.dim_str = String("")

# dim parameter usage: --dim size
# or --dim min_size:max_size (doubling size with each step)
# or --dim min_size:max_size:step
def parse_dim(dim_str: String, mut sizes: List[Int]):
if dim_str.find(":") != -1:
var parts = dim_str.split(":")
var start = Int(parts[0])
var stop = Int(parts[1])
if len(parts) == 3:
# linear range
var step = Int(parts[2])
var n = start
while n <= stop:
sizes.append(n)
n += step
else:
# doubling each step or single input size
var n = start
while n <= stop:
sizes.append(n)
n *= 2
elif dim_str.find(",") != -1:
var parts = dim_str.split(",")
for i in range(len(parts)):
sizes.append(Int(parts[i]))
else:
sizes.append(Int(dim_str))


def parse_args(mut params: RunParams) -> Bool:
var args = argv()
var n_custom = 0

var i = 1
while i < len(args):
Expand All @@ -44,12 +73,12 @@ def parse_args(mut params: RunParams) -> Bool:
else:
print("--type requires a value")
return False
elif arg == "--n":
elif arg == "--dim":
if i + 1 < len(args):
n_custom = Int(args[i + 1])
params.dim_str = String(args[i + 1])
i += 2
else:
print("--n requires a value")
print("--dim requires a value")
return False
elif arg == "--iters":
if i + 1 < len(args):
Expand All @@ -64,9 +93,10 @@ def parse_args(mut params: RunParams) -> Bool:
else:
i += 1

if n_custom > 0:
params.sizes.append(n_custom)
if len(params.dim_str) > 0:
parse_dim(params.dim_str, params.sizes)
else:
# Defaults:
params.sizes.append(1024)
params.sizes.append(8192)
params.sizes.append(1048576)
Expand Down Expand Up @@ -99,7 +129,7 @@ def bench_asum[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: n reads
var bw_gbs = Float64(n * bytes_per_elem(dtype)) / avg
print("asum,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("asum," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_axpy[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -126,7 +156,7 @@ def bench_axpy[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2n reads + n writes = 3n
var bw_gbs = Float64(3 * n * bytes_per_elem(dtype)) / avg
print("axpy,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("axpy," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_copy[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -151,7 +181,7 @@ def bench_copy[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: n reads + n writes = 2n
var bw_gbs = Float64(2 * n * bytes_per_elem(dtype)) / avg
print("copy,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("copy," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_dot[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -177,7 +207,7 @@ def bench_dot[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2n reads
var bw_gbs = Float64(2 * n * bytes_per_elem(dtype)) / avg
print("dot,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("dot," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_dotc[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -203,7 +233,7 @@ def bench_dotc[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2 vectors * 2n floats = 4n reads
var bw_gbs = Float64(4 * n * bytes_per_elem(dtype)) / avg
print("dotc,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("dotc," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_dotu[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -229,7 +259,7 @@ def bench_dotu[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2 vectors * 2n floats = 4n reads
var bw_gbs = Float64(4 * n * bytes_per_elem(dtype)) / avg
print("dotu,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("dotu," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_iamax[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -251,7 +281,7 @@ def bench_iamax[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: n reads
var bw_gbs = Float64(n * bytes_per_elem(dtype)) / avg
print("iamax,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("iamax," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_nrm2[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -273,7 +303,7 @@ def bench_nrm2[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: n reads
var bw_gbs = Float64(n * bytes_per_elem(dtype)) / avg
print("nrm2,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("nrm2," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_rot[dtype: DType](n: Int, iters: Int, ctx: DeviceContext) where dtype.is_floating_point():
Expand Down Expand Up @@ -302,7 +332,7 @@ def bench_rot[dtype: DType](n: Int, iters: Int, ctx: DeviceContext) where dtype.
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2n reads + 2n writes = 4n
var bw_gbs = Float64(4 * n * bytes_per_elem(dtype)) / avg
print("rot,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("rot," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_rotg[dtype: DType](iters: Int):
Expand All @@ -320,7 +350,7 @@ def bench_rotg[dtype: DType](iters: Int):
end = monotonic()

var avg = Float64(end - start) / Float64(iters)
print("rotg, cpu,", dtype, ", -, ", iters, ",", Int(avg), "ns")
print("rotg,cpu," + String(dtype) + ",-," + String(iters) + "," + String(Int(avg)) + ",")


def bench_rotm[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand Down Expand Up @@ -359,7 +389,7 @@ def bench_rotm[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2n reads + 2n writes = 4n
var bw_gbs = Float64(4 * n * bytes_per_elem(dtype)) / avg
print("rotm,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("rotm," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_rotmg[dtype: DType](iters: Int):
Expand All @@ -378,7 +408,7 @@ def bench_rotmg[dtype: DType](iters: Int):
end = monotonic()

var avg = Float64(end - start) / Float64(iters)
print("rotmg, cpu,", dtype, ", -, ", iters, ",", Int(avg), "ns")
print("rotmg,cpu," + String(dtype) + ",-," + String(iters) + "," + String(Int(avg)) + ",")


def bench_scal[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -401,7 +431,7 @@ def bench_scal[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: n reads + n writes = 2n
var bw_gbs = Float64(2 * n * bytes_per_elem(dtype)) / avg
print("scal,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("scal," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def bench_swap[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
Expand All @@ -426,7 +456,7 @@ def bench_swap[dtype: DType](n: Int, iters: Int, ctx: DeviceContext):
var avg = Float64(end - start) / Float64(iters)
# bandwidth: 2n reads + 2n writes = 4n
var bw_gbs = Float64(4 * n * bytes_per_elem(dtype)) / avg
print("swap,", ctx.name(), ",", dtype, ",", n, ",", iters, ",", Int(avg), "ns,", bw_gbs, "GB/s")
print("swap," + ctx.name() + "," + String(dtype) + "," + String(n) + "," + String(iters) + "," + String(Int(avg)) + "," + String(bw_gbs))


def run_dtype[
Expand Down Expand Up @@ -471,7 +501,7 @@ def main():
if not parse_args(params):
return

print("op, device, dtype, n, iters, avg time, bandwidth")
print("op,device,dtype,n,iters,avg_ns,bandwidth_GBs")

with DeviceContext() as ctx:
for routine in(params.routines):
Expand Down
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