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hasan.bahjat
openMP-HW
Commits
76d926f0
Commit
76d926f0
authored
Nov 04, 2024
by
hasan khaddour
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update mak file
parent
de5e8713
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MakeFile
MakeFile
+1
-1
mandlebrot.c
mandlebrot.c
+52
-0
mandlebrot.exe
mandlebrot.exe
+0
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MakeFile
View file @
76d926f0
# Compiler and flags
CC
=
g
cc
CC
=
g
++
CFLAGS
=
-fopenmp
-O2
PROF_FLAGS
=
-pg
...
...
mandlebrot.c
0 → 100644
View file @
76d926f0
#include "iostream"
#include <complex>
#include <omp.h>
#include <cstdlib>
bool
isInMandelbrotSet
(
double
real
,
double
imag
,
int
max_iterations
)
{
std
::
complex
<
double
>
c
(
real
,
imag
);
std
::
complex
<
double
>
z
=
0
;
for
(
int
i
=
0
;
i
<
max_iterations
;
++
i
)
{
z
=
z
*
z
+
c
;
if
(
std
::
abs
(
z
)
>
2
.
0
)
return
false
;
}
return
true
;
}
double
calculateMandelbrotArea
(
int
num_points
,
int
max_iterations
,
bool
parallel
)
{
int
in_set_count
=
0
;
double
real
,
imag
;
#pragma omp parallel for reduction(+:in_set_count) private(real, imag) if (parallel)
for
(
int
i
=
0
;
i
<
num_points
;
++
i
)
{
real
=
(
rand
()
/
(
double
)
RAND_MAX
)
*
3
.
5
-
2
.
5
;
// Real part in range [-2.5, 1]
imag
=
(
rand
()
/
(
double
)
RAND_MAX
)
*
2
.
0
-
1
.
0
;
// Imaginary part in range [-1, 1]
if
(
isInMandelbrotSet
(
real
,
imag
,
max_iterations
))
{
in_set_count
++
;
}
}
double
area
=
(
3
.
5
*
2
.
0
)
*
(
in_set_count
/
(
double
)
num_points
);
return
area
;
}
int
main
()
{
int
num_points
=
1000000
;
// Number of random points for Monte Carlo
int
max_iterations
=
5000
;
// Maximum iterations for Mandelbrot check
// Sequential run
double
start_time
=
omp_get_wtime
();
double
area_seq
=
calculateMandelbrotArea
(
num_points
,
max_iterations
,
false
);
double
end_time
=
omp_get_wtime
();
std
::
cout
<<
"Sequential Mandelbrot area: "
<<
area_seq
<<
std
::
endl
;
std
::
cout
<<
"Sequential time: "
<<
end_time
-
start_time
<<
" seconds
\n
"
;
// Parallel run
start_time
=
omp_get_wtime
();
double
area_par
=
calculateMandelbrotArea
(
num_points
,
max_iterations
,
true
);
end_time
=
omp_get_wtime
();
std
::
cout
<<
"Parallel Mandelbrot area: "
<<
area_par
<<
std
::
endl
;
std
::
cout
<<
"Parallel time: "
<<
end_time
-
start_time
<<
" seconds
\n
"
;
return
0
;
}
mandlebrot.exe
0 → 100644
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76d926f0
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