Unified and pinned memory vs in jetson NX

kateWalsh · September 13, 2022, 3:53pm

hi guys.
I have used bellow script in jetson xavier NX to gray my rgb image. how can I avoid cudamemcpy in my script by using unified or pinned memory to reduce time of execution?
does time of bellow script reduces by using unified or pinned memory or no?
I tested Pinned memory and used cudaevent to get time of execution but it made the program 3 times slower.
what is the solution
script :

AastaLLL · September 14, 2022, 3:00am

Hi,

Depends on the usage (read/write requirement), the recommended memory type will be different.
You can find the detailed memory type behavior in the below document:

If you want to use OpenCV → CUDA, below is a good sample for your reference:

github.com

dusty-nv/jetson-utils/blob/master/python/examples/cuda-from-cv.py

#!/usr/bin/env python3
#
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
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# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

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Thanks.

system · October 5, 2022, 5:50am

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