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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
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提交
2b6a5793
编写于
9月 14, 2020
作者:
S
ShenLiang
提交者:
GitHub
9月 14, 2020
浏览文件
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电子邮件补丁
差异文件
remove auto mode from localsgd optimizer (#27237)
* rm auto from localsgd
上级
cc3f4b81
变更
5
隐藏空白更改
内联
并排
Showing
5 changed file
with
29 addition
and
53 deletion
+29
-53
paddle/fluid/framework/distributed_strategy.proto
paddle/fluid/framework/distributed_strategy.proto
+4
-1
python/paddle/distributed/fleet/base/distributed_strategy.py
python/paddle/distributed/fleet/base/distributed_strategy.py
+3
-6
python/paddle/distributed/fleet/meta_optimizers/localsgd_optimizer.py
...e/distributed/fleet/meta_optimizers/localsgd_optimizer.py
+18
-44
python/paddle/fluid/tests/unittests/test_fleet_distributed_strategy.py
.../fluid/tests/unittests/test_fleet_distributed_strategy.py
+3
-2
python/paddle/fluid/tests/unittests/test_fleet_localsgd_meta_optimizer.py
...uid/tests/unittests/test_fleet_localsgd_meta_optimizer.py
+1
-0
未找到文件。
paddle/fluid/framework/distributed_strategy.proto
100755 → 100644
浏览文件 @
2b6a5793
...
...
@@ -36,7 +36,10 @@ message AMPConfig {
repeated
string
custom_black_varnames
=
9
;
}
message
LocalSGDConfig
{
optional
int32
k_steps
=
1
[
default
=
4
];
}
message
LocalSGDConfig
{
optional
int32
k_steps
=
1
[
default
=
1
];
optional
int32
begin_step
=
2
[
default
=
1
];
}
message
GradientMergeConfig
{
optional
int32
k_steps
=
1
[
default
=
1
];
...
...
python/paddle/distributed/fleet/base/distributed_strategy.py
浏览文件 @
2b6a5793
...
...
@@ -707,11 +707,7 @@ class DistributedStrategy(object):
**Notes**:
k_steps(int) The local steps for training before parameter synchronization. Default 1.
If strategy.auto is set True, the local steps will be calculated automatically during training.
The algorithm is referenced in this paper:
`Adaptive Communication Strategies to Achieve the Best Error-Runtime Trade-off in Local-Update SGD <https://arxiv.org/pdf/1810.08313.pdf>`_.
In this case, k_steps indicates the first local steps which is suggested setting to 1.
begin_step(int) The step of begining training by localsgd. Default 1.
Examples:
.. code-block:: python
...
...
@@ -719,7 +715,8 @@ class DistributedStrategy(object):
import paddle.distributed.fleet as fleet
strategy = fleet.DistributedStrategy()
strategy.localsgd = True
strategy.localsgd_configs = {"k_steps": 4}
strategy.localsgd_configs = {"k_steps": 4,
"begin_step": 30}
"""
return
get_msg_dict
(
self
.
strategy
.
localsgd_configs
)
...
...
python/paddle/distributed/fleet/meta_optimizers/localsgd_optimizer.py
浏览文件 @
2b6a5793
...
...
@@ -49,7 +49,7 @@ class LocalSGDOptimizer(MetaOptimizerBase):
def
_enable_strategy
(
self
,
dist_strategy
,
context
):
dist_strategy
.
localsgd
=
True
dist_strategy
.
localsgd_configs
=
{
"k_steps"
:
1
}
dist_strategy
.
localsgd_configs
=
{
"k_steps"
:
1
,
"begin_step"
:
1
}
def
snapshot_name
(
self
,
param_name
):
return
param_name
+
self
.
snapshot_key
...
...
@@ -86,8 +86,9 @@ class LocalSGDOptimizer(MetaOptimizerBase):
minimized
=
self
.
inner_opt
.
minimize
(
loss
,
startup_program
=
startup_program
)
init_k_steps
=
self
.
user_defined_strategy
.
localsgd_configs
[
'k_steps'
]
auto_steps
=
self
.
user_defined_strategy
.
auto
k_steps_value
=
self
.
user_defined_strategy
.
localsgd_configs
[
'k_steps'
]
begin_step_value
=
self
.
user_defined_strategy
.
localsgd_configs
[
'begin_step'
]
if
startup_program
is
None
:
startup_program
=
default_startup_program
()
...
...
@@ -101,45 +102,28 @@ class LocalSGDOptimizer(MetaOptimizerBase):
p2s
=
self
.
create_snapshot_vars
(
main_block
.
program
)
with
program_guard
(
main_block
.
program
,
startup_program
):
step
=
layers
.
autoincreased_step_counter
(
begin
=
0
)
step
=
layers
.
autoincreased_step_counter
(
begin
=
1
)
k_steps
=
layers
.
create_global_var
(
name
=
"k_steps"
,
shape
=
[
1
],
value
=
init_k_steps
,
value
=
k_steps_value
,
dtype
=
'int64'
,
persistable
=
True
)
begin_step
=
layers
.
create_global_var
(
name
=
"begin_step"
,
shape
=
[
1
],
value
=
begin_step_value
,
dtype
=
'int64'
,
persistable
=
True
)
last_step
=
layers
.
create_global_var
(
name
=
"last_step"
,
shape
=
[
1
],
value
=
int
(
0
)
,
value
=
begin_step_value
,
dtype
=
'int64'
,
persistable
=
True
)
if
auto_steps
:
avg_loss
=
layers
.
collective
.
_c_allreduce
(
loss
)
/
self
.
role_maker
.
worker_num
()
lr_0
=
layers
.
create_global_var
(
name
=
"lr_0"
,
shape
=
[
1
],
value
=
float
(
0
),
dtype
=
'float32'
,
persistable
=
True
)
loss_0
=
layers
.
create_global_var
(
name
=
"loss_0"
,
shape
=
[
1
],
value
=
float
(
0
),
dtype
=
'float32'
,
persistable
=
True
)
global_lr
=
self
.
inner_opt
.
_global_learning_rate
()
def
initialize
():
layers
.
assign
(
loss
,
loss_0
)
layers
.
assign
(
global_lr
,
lr_0
)
layers
.
cond
(
step
==
0
,
initialize
)
def
communicate
():
sub_block
=
default_main_program
().
current_block
()
ring_id
=
-
1
...
...
@@ -195,20 +179,10 @@ class LocalSGDOptimizer(MetaOptimizerBase):
inputs
=
{
'X'
:
[
param
]},
outputs
=
{
'Out'
:
[
snapshot
]},
attrs
=
{
OP_ROLE_KEY
:
OpRole
.
Optimize
})
if
auto_steps
:
next_local_steps
=
layers
.
cast
(
layers
.
ceil
(
layers
.
sqrt
(
lr_0
*
loss
/
(
global_lr
*
loss_0
)
*
float
(
init_k_steps
))),
dtype
=
'int64'
)
max_local_steps
=
layers
.
fill_constant
(
shape
=
[
1
],
dtype
=
'int64'
,
value
=
16
)
next_local_steps
=
layers
.
elementwise_min
(
next_local_steps
,
max_local_steps
)
layers
.
assign
(
next_local_steps
,
k_steps
)
layers
.
assign
(
step
,
last_step
)
layers
.
cond
(
step
-
last_step
==
k_steps
,
communicate
)
def
begin_localsgd
():
layers
.
cond
(
step
-
last_step
==
k_steps
,
communicate
)
layers
.
cond
(
step
>
begin_step
,
begin_localsgd
,
communicate
)
return
minimized
python/paddle/fluid/tests/unittests/test_fleet_distributed_strategy.py
浏览文件 @
2b6a5793
...
...
@@ -81,9 +81,10 @@ class TestStrategyConfig(unittest.TestCase):
def
test_localsgd_configs
(
self
):
strategy
=
paddle
.
distributed
.
fleet
.
DistributedStrategy
()
configs
=
{
"k_steps"
:
4
}
configs
=
{
"k_steps"
:
4
,
"begin_step"
:
120
}
strategy
.
localsgd_configs
=
configs
self
.
assertEqual
(
strategy
.
localsgd_configs
[
"k_steps"
],
4
)
self
.
assertEqual
(
strategy
.
localsgd_configs
[
"begin_step"
],
120
)
def
test_dgc
(
self
):
strategy
=
paddle
.
distributed
.
fleet
.
DistributedStrategy
()
...
...
@@ -230,7 +231,7 @@ class TestStrategyConfig(unittest.TestCase):
strategy
.
a_sync
=
True
strategy
.
localsgd
=
True
strategy
.
dgc
=
True
localsgd_configs
=
{
"k_steps"
:
5
}
localsgd_configs
=
{
"k_steps"
:
5
,
"begin_step"
:
1
}
strategy
.
localsgd_configs
=
localsgd_configs
build_strategy
=
paddle
.
fluid
.
BuildStrategy
()
build_strategy
.
enable_sequential_execution
=
True
...
...
python/paddle/fluid/tests/unittests/test_fleet_localsgd_meta_optimizer.py
浏览文件 @
2b6a5793
...
...
@@ -44,6 +44,7 @@ class TestFleetLocalSGDMetaOptimizer(unittest.TestCase):
strategy
.
auto
=
True
config
=
strategy
.
localsgd_configs
config
[
'k_steps'
]
=
1
config
[
'begin_step'
]
=
1
strategy
.
localsgd_configs
=
config
optimizer
=
paddle
.
fluid
.
optimizer
.
SGD
(
learning_rate
=
0.01
)
...
...
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