regent: Test cases for parallelizer hints with interior partition

language/tests/regent/run_pass/parallelize_tasks_hint_primary_subset1.rg

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+-- Copyright 2016 Stanford University
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+-- runs-with:
+-- [
+--  ["-ll:cpu", "4", "-fbounds-checks", "1", "-fdebug", "1",
+--   "-fparallelize-dop", "5"],
+--  ["-ll:cpu", "4", "-fparallelize-dop", "10"]
+-- ]
+
+import "regent"
+
+local c = regentlib.c
+
+fspace fs
+{
+  f : double,
+  g : double,
+  h : double,
+}
+
+__demand(__parallel)
+task init(r : region(ispace(int2d), fs))
+where reads writes(r)
+do
+  for e in r do e.f = c.drand48() end
+  for e in r do e.g = 0 end
+  for e in r do e.h = 0 end
+end
+
+__demand(__parallel)
+task stencil(s : region(ispace(int2d), fs), r : region(ispace(int2d), fs))
+where reads(r.f), reads writes(r.g)
+do
+  var ts_start = c.legion_get_current_time_in_micros()
+  for e in s do
+    r[e].g = 0.5 * (r[e].f +
+                    r[e + {-2, 0}].f +
+                    r[e - {1, 1}].f +
+                    r[e - {-2, -2}].f +
+                    r[e + {1, 0}].f)
+  end
+  var ts_end = c.legion_get_current_time_in_micros()
+  c.printf("parallel version: %lu us\n", ts_end - ts_start)
+end
+
+task stencil_serial(s : region(ispace(int2d), fs), r : region(ispace(int2d), fs))
+where reads(r.f), reads writes(r.h)
+do
+  var ts_start = c.legion_get_current_time_in_micros()
+  for e in s do
+    r[e].h = 0.5 * (r[e].f +
+                    r[e + {-2, 0}].f +
+                    r[e - {1, 1}].f +
+                    r[e - {-2, -2}].f +
+                    r[e + {1, 0}].f)
+  end
+  var ts_end = c.legion_get_current_time_in_micros()
+  c.printf("serial version: %lu us\n", ts_end - ts_start)
+end
+
+local cmath = terralib.includec("math.h")
+
+task test(size : int, p : int)
+  c.srand48(12345)
+  var is = ispace(int2d, {size, size})
+  var primary_region = region(is, fs)
+  var bounds = primary_region.bounds
+  var coloring = c.legion_domain_point_coloring_create()
+  c.legion_domain_point_coloring_color_domain(coloring, [int1d](0),
+                                              rect2d { bounds.lo + {2, 2},
+                                                       bounds.hi - {2, 2} })
+  var interior_partition = partition(disjoint, primary_region, coloring, ispace(int1d, 1))
+  c.legion_domain_point_coloring_destroy(coloring)
+  var interior_region = interior_partition[0]
+  var primary_partition = partition(equal, primary_region, ispace(int2d, {p, p}))
+  __parallelize_with primary_partition
+  do
+    init(primary_region)
+    stencil(interior_region, primary_region)
+    stencil_serial(interior_region, primary_region)
+  end
+  for e in primary_region do
+    regentlib.assert(cmath.fabs(e.h - e.g) < 0.000001, "test failed")
+  end
+end
+
+task toplevel()
+  test(100, 2)
+  test(300, 3)
+end
+
+regentlib.start(toplevel)

language/tests/regent/run_pass/parallelize_tasks_hint_primary_subset2.rg

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+-- Copyright 2016 Stanford University
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+-- runs-with:
+-- [
+--  ["-ll:cpu", "4", "-fbounds-checks", "1", "-fdebug", "1",
+--   "-fparallelize-dop", "5"],
+--  ["-ll:cpu", "4", "-fparallelize-dop", "10"]
+-- ]
+
+import "regent"
+
+local c = regentlib.c
+
+fspace fs
+{
+  f : double,
+  g : double,
+  h : double,
+}
+
+__demand(__parallel)
+task init(r : region(ispace(int2d), fs))
+where reads writes(r)
+do
+  for e in r do e.f = c.drand48() end
+  for e in r do e.g = 0 end
+  for e in r do e.h = 0 end
+end
+
+__demand(__parallel)
+task stencil(s : region(ispace(int2d), fs), r : region(ispace(int2d), fs))
+where reads(r.f), reads writes(r.g)
+do
+  var ts_start = c.legion_get_current_time_in_micros()
+  for e in s do
+    r[e].g = 0.5 * (r[e].f +
+                    r[e + {-2, 0}].f +
+                    r[e - {1, 1}].f +
+                    r[e - {-2, -2}].f +
+                    r[e + {1, 0}].f)
+  end
+  var ts_end = c.legion_get_current_time_in_micros()
+  c.printf("parallel version: %lu us\n", ts_end - ts_start)
+end
+
+task stencil_serial(s : region(ispace(int2d), fs), r : region(ispace(int2d), fs))
+where reads(r.f), reads writes(r.h)
+do
+  var ts_start = c.legion_get_current_time_in_micros()
+  for e in s do
+    r[e].h = 0.5 * (r[e].f +
+                    r[e + {-2, 0}].f +
+                    r[e - {1, 1}].f +
+                    r[e - {-2, -2}].f +
+                    r[e + {1, 0}].f)
+  end
+  var ts_end = c.legion_get_current_time_in_micros()
+  c.printf("serial version: %lu us\n", ts_end - ts_start)
+end
+
+local cmath = terralib.includec("math.h")
+
+task test(size : int, p : int)
+  c.srand48(12345)
+  var is = ispace(int2d, {size, size})
+  var primary_region = region(is, fs)
+  var primary_partition = partition(equal, primary_region, ispace(int2d, {p, p}))
+  var bounds = primary_region.bounds
+  var coloring = c.legion_domain_point_coloring_create()
+  c.legion_domain_point_coloring_color_domain(coloring, [int1d](0),
+                                              rect2d { bounds.lo + {2, 2},
+                                                       bounds.hi - {2, 2} })
+  var interior_partition = partition(disjoint, primary_region, coloring, ispace(int1d, 1))
+  c.legion_domain_point_coloring_destroy(coloring)
+  var interior_region = interior_partition[0]
+  __parallelize_with primary_partition
+  do
+    init(primary_region)
+    stencil(interior_region, primary_region)
+    stencil_serial(interior_region, primary_region)
+  end
+  for e in primary_region do
+    regentlib.assert(cmath.fabs(e.h - e.g) < 0.000001, "test failed")
+  end
+end
+
+task toplevel()
+  test(100, 2)
+  test(300, 3)
+end
+
+regentlib.start(toplevel)