Skip to content
GitLab
Projects
Groups
Snippets
/
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Menu
Open sidebar
Tom Harke
pystencils
Commits
0690f5ad
Commit
0690f5ad
authored
May 29, 2019
by
Martin Bauer
Browse files
Added function to run compiled C benchmark code
parent
f6ef4d88
Changes
2
Hide whitespace changes
Inline
Side-by-side
pystencils/kerncraft_coupling/__init__.py
View file @
0690f5ad
from
.kerncraft_interface
import
PyStencilsKerncraftKernel
,
KerncraftParameters
from
.generate_benchmark
import
generate_benchmark
,
run_c_benchmark
__all__
=
[
'PyStencilsKerncraftKernel'
,
'KerncraftParameters'
]
__all__
=
[
'PyStencilsKerncraftKernel'
,
'KerncraftParameters'
,
'generate_benchmark'
,
'run_c_benchmark'
]
pystencils/kerncraft_coupling/generate_benchmark.py
View file @
0690f5ad
from
jinja2
import
Template
import
os
import
subprocess
from
pystencils.include
import
get_pystencils_include_path
from
pystencils.cpu.cpujit
import
get_compiler_config
,
run_compile_step
from
pystencils.backends.cbackend
import
generate_c
,
get_headers
from
pystencils.sympyextensions
import
prod
from
pystencils.data_types
import
get_base_type
...
...
@@ -10,6 +14,8 @@ benchmark_template = Template("""
#include <stdint.h>
#include <stdbool.h>
#include <math.h>
#include <stdio.h>
{{ includes }}
{%- if likwid %}
...
...
@@ -18,7 +24,8 @@ benchmark_template = Template("""
#define RESTRICT __restrict__
#define FUNC_PREFIX
void dummy(double *);
void dummy(void *);
void timing(double* wcTime, double* cpuTime);
extern int var_false;
...
...
@@ -72,19 +79,30 @@ int main(int argc, char **argv)
likwid_markerStartRegion("loop");
{%- endif %}
}
{%- if timing %}
double wcStartTime, cpuStartTime, wcEndTime, cpuEndTime;
timing(&wcStartTime, &cpuStartTime);
{%- endif %}
for (; repeat > 0; --repeat)
{
{{kernelName}}({{call_argument_list}});
// Dummy calls
{%- for field_name, dataType, size in fields %}
if(var_false) dummy({{field_name}});
if(var_false) dummy(
(void*)
{{field_name}});
{%- endfor %}
{%- for constantName, dataType in constants %}
if(var_false) dummy(&{{constantName}});
if(var_false) dummy(
(void*)
&{{constantName}});
{%- endfor %}
}
{%- if timing %}
timing(&wcEndTime, &cpuEndTime);
if( warmup == 0)
printf("%e
\\
n", (wcEndTime - wcStartTime) / atoi(argv[1]) );
{%- endif %}
}
{%- if likwid %}
...
...
@@ -101,7 +119,18 @@ int main(int argc, char **argv)
"""
)
def
generate_benchmark
(
ast
,
likwid
=
False
,
openmp
=
False
):
def
generate_benchmark
(
ast
,
likwid
=
False
,
openmp
=
False
,
timing
=
False
):
"""Return C code of a benchmark program for the given kernel.
Args:
ast: the pystencils AST object as returned by create_kernel
likwid: if True likwid markers are added to the code
openmp: relevant only if likwid=True, to generated correct likwid initialization code
timing: add timing output to the code, prints time per iteration to stdout
Returns:
C code as string
"""
accessed_fields
=
{
f
.
name
:
f
for
f
in
ast
.
fields_accessed
}
constants
=
[]
fields
=
[]
...
...
@@ -135,5 +164,45 @@ def generate_benchmark(ast, likwid=False, openmp=False):
'constants'
:
constants
,
'call_argument_list'
:
","
.
join
(
call_parameters
),
'includes'
:
includes
,
'timing'
:
timing
,
}
return
benchmark_template
.
render
(
**
args
)
def
run_c_benchmark
(
ast
,
inner_iterations
,
outer_iterations
=
3
):
"""Runs the given kernel with outer loop in C
Args:
ast:
inner_iterations: timings are recorded around this many iterations
outer_iterations: number of timings recorded
Returns:
list of times per iterations for each outer iteration
"""
import
kerncraft
benchmark_code
=
generate_benchmark
(
ast
,
timing
=
True
)
with
open
(
'bench.c'
,
'w'
)
as
f
:
f
.
write
(
benchmark_code
)
kerncraft_path
=
os
.
path
.
dirname
(
kerncraft
.
__file__
)
extra_flags
=
[
'-I'
+
get_pystencils_include_path
(),
'-I'
+
os
.
path
.
join
(
kerncraft_path
,
'headers'
)]
compiler_config
=
get_compiler_config
()
compile_cmd
=
[
compiler_config
[
'command'
]]
+
compiler_config
[
'flags'
].
split
()
compile_cmd
+=
[
*
extra_flags
,
os
.
path
.
join
(
kerncraft_path
,
'headers'
,
'timing.c'
),
os
.
path
.
join
(
kerncraft_path
,
'headers'
,
'dummy.c'
),
'bench.c'
,
'-o'
,
'bench'
,
]
run_compile_step
(
compile_cmd
)
results
=
[]
for
_
in
range
(
outer_iterations
):
benchmark_time
=
float
(
subprocess
.
check_output
([
'./bench'
,
str
(
inner_iterations
)]))
results
.
append
(
benchmark_time
)
return
results
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment