未验证 提交 0ad892a0 编写于 作者: T Tao Luo 提交者: GitHub

Merge pull request #9816 from luotao1/remove_op

add remove_op, remove_var in Python end
......@@ -13,11 +13,10 @@ See the License for the specific language governing permissions and
limitations under the License. */
#include "paddle/fluid/framework/block_desc.h"
#include <queue>
#include "paddle/fluid/framework/operator.h"
#include "paddle/fluid/framework/program_desc.h"
#include <queue>
namespace paddle {
namespace framework {
......@@ -147,52 +146,7 @@ void BlockDesc::RemoveOp(size_t s, size_t e) {
if (ops_.begin() + s == ops_.end() || ops_.begin() + e == ops_.end()) {
return;
}
auto get_vars = [](std::deque<std::unique_ptr<OpDesc>>::iterator &op,
std::vector<std::string> &v) {
auto in_names = (*op)->InputArgumentNames();
v.insert(v.end(), in_names.begin(), in_names.end());
auto out_names = (*op)->OutputArgumentNames();
v.insert(v.end(), out_names.begin(), out_names.end());
std::sort(v.begin(), v.end());
auto last = std::unique(v.begin(), v.end());
v.erase(last, v.end());
};
need_update_ = true;
for (size_t i = s; i < e; i++) {
// since remove op one by one, every time remove the first op.
auto op = ops_.begin() + s;
// collect input and output variables from current delete op
std::vector<std::string> cur_vars;
get_vars(op, cur_vars);
// remove current op
ops_.erase(ops_.begin() + s);
// collect input and output variables from other ops
std::vector<std::string> other_vars;
for (auto it = ops_.begin(); it != ops_.end(); it++) {
get_vars(it, other_vars);
}
// variables should be deleted
std::vector<std::string> delete_vars;
// delete_vars = cur_vars - cur_vars ^ other_input_vars
std::set_difference(cur_vars.begin(), cur_vars.end(), other_vars.begin(),
other_vars.end(),
std::inserter(delete_vars, delete_vars.end()));
// remove variables
for (size_t i = 0; i < delete_vars.size(); i++) {
auto name = delete_vars[i];
auto it = vars_.find(name);
PADDLE_ENFORCE(it != vars_.end(),
"%s is not in variable list, it should not be deleted",
name);
vars_.erase(it);
VLOG(3) << "deleting variable " << name;
}
}
ops_.erase(ops_.begin() + s, ops_.begin() + e);
}
std::vector<OpDesc *> BlockDesc::AllOps() const {
......
......@@ -818,6 +818,11 @@ class Block(object):
del self.vars[name]
self.sync_with_cpp()
def remove_var(self, name):
self.sync_with_cpp()
self.desc.remove_var(name)
del self.vars[name]
def create_parameter(self, *args, **kwargs):
global_block = self.program.global_block()
param = Parameter(global_block, *args, **kwargs)
......@@ -838,6 +843,11 @@ class Block(object):
self.ops.insert(index, op)
return op
def remove_op(self, index):
self.sync_with_cpp()
self.desc.remove_op(index, index + 1)
del self.ops[index]
def delete_ops(self, ops):
# remove from cpp
# FIXME(typhoonzero): remove only the first occurrence.
......@@ -846,6 +856,7 @@ class Block(object):
end = list(self.ops).index(ops[-1])
except Exception, e:
raise e
self.desc.remove_op(start, end + 1)
def slice_ops(self, start, end):
......
......@@ -201,24 +201,6 @@ class TestBlockDesc(unittest.TestCase):
op1.set_type("test")
op2.set_type("test")
var0 = block.var("var0")
var1 = block.var("var1")
var2 = block.var("var2")
var3 = block.var("var3")
var4 = block.var("var4")
var5 = block.var("var5")
op0.set_input("X", ["var0"])
op0.set_output("Y", ["var0"])
op1.set_input("X", ["var1", "var2"])
op1.set_output("Y", ["var3", "var4"])
op2.set_input("X", ["var1"])
op2.set_output("Y", ["var4", "var5"])
program.sync_with_cpp()
# remove op1, its input var2 and output var3 will be removed at the same time,
# but its input var1 and output var4 will not be removed since they are used for op2.
block.remove_op(1, 2)
program.sync_with_cpp()
......@@ -226,8 +208,6 @@ class TestBlockDesc(unittest.TestCase):
for idx in xrange(0, block.op_size()):
all_ops.append(block.op(idx))
self.assertEqual(all_ops, [op0, op2])
all_vars = block.all_vars()
self.assertEqual(set(all_vars), {var0, var1, var4, var5})
if __name__ == '__main__':
......
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