From 709fa09b6086b46f6480fcdb25d91bfca493f3c4 Mon Sep 17 00:00:00 2001
From: Yaman Umuroglu <maltanar@gmail.com>
Date: Thu, 3 Sep 2020 00:50:15 +0200
Subject: [PATCH] [Transform] don't run HLSSynthIP on nodes with output
products
---
src/finn/transformation/fpgadataflow/hlssynth_ip.py | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/src/finn/transformation/fpgadataflow/hlssynth_ip.py b/src/finn/transformation/fpgadataflow/hlssynth_ip.py
index 6d7c40256..8315b6ec1 100644
--- a/src/finn/transformation/fpgadataflow/hlssynth_ip.py
+++ b/src/finn/transformation/fpgadataflow/hlssynth_ip.py
@@ -26,9 +26,11 @@
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+import os
import finn.custom_op.registry as registry
from finn.util.fpgadataflow import is_fpgadataflow_node
from finn.transformation import NodeLocalTransformation
+import warnings
class HLSSynthIP(NodeLocalTransformation):
@@ -36,9 +38,11 @@ class HLSSynthIP(NodeLocalTransformation):
that is referenced in node attribute "code_gen_dir_ipgen"
and save path of generated project in node attribute "ipgen_path".
All nodes in the graph must have the fpgadataflow backend attribute.
+ Any nodes that already have a ipgen_path attribute pointing to a valid path
+ will be skipped.
This transformation calls Vivado HLS for synthesis, so it will run for
- some time (several minutes)
+ some time (minutes to hours depending on configuration).
* num_workers (int or None) number of parallel workers, see documentation in
NodeLocalTransformation for more details.
@@ -59,8 +63,11 @@ class HLSSynthIP(NodeLocalTransformation):
), """Node
attribute "code_gen_dir_ipgen" is empty. Please run
transformation PrepareIP first."""
- # call the compilation function for this node
- inst.ipgen_singlenode_code()
+ if not os.path.isdir(inst.get_nodeattr("ipgen_path")):
+ # call the compilation function for this node
+ inst.ipgen_singlenode_code()
+ else:
+ warnings.warn("Using pre-existing IP for %s" % node.name)
# ensure that executable path is now set
assert (
inst.get_nodeattr("ipgen_path") != ""
--
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