SLI not working

Paulo-Arbelez wrote on 1/2/2023, 8:27 AM

I have 2 NVIDIA GeForce GT 755M on my laptop, and only 1 of 2 GPUs decodes video for proxies, making the process extremely slow. I have SLI activated, and the NVIDIA Recommended SLI Rendering Mode activated in teh Nvidia control panel.

Is there any way to make both GPUs work on coding and decoding video (rendering).

 

Thanks!

Comments

johnebaker wrote on 1/2/2023, 10:30 AM

@Paulo-Arbelez

Hi

Which version of Magix Movie Studio (previously Movie Edit Pro) are you using?

. . . . GeForce GT 755M . . . . 1 of 2 GPUs . . .

Do you mean the 2 Shader blocks in the GT 755M ?

Are you sure the GPU is being used for decoding video? The GT 755 M does not support hardware decoding for the latest versions of Movie Studio (Movie Edit Pro) as it does not have the necessary NVENC feature to enable this.

Versions of Movie Edit Pro 2015 (IIRC) and later, up to and including 2020, do not support NVCUVENC (CUDA) which would be required for decoding video.

All decoding/encoding should be being done by the CPU and will be slow depending on your source video resolution, encoding format and framerate and the CPU installed in the laptop.

What is the make and model of the laptop?

John EB
Forum Moderator

Last changed by johnebaker on 1/2/2023, 10:31 AM, changed a total of 1 times.

VPX 16, Movie Studio 2025, and earlier versions 2015 and 2016, Music Maker Premium 2024.

PC - running Windows 11 23H2 Professional on Intel i7-8700K 3.2 GHz, 16GB RAM, RTX 2060 6GB 192-bit GDDR6, 1 x 1Tb Sabrent NVME SSD (OS and programs), 2 x 4TB (Data) internal HDD + 1TB internal SSD (Work disc), + 6 ext backup HDDs.

Laptop - Lenovo Legion 5i Phantom - running Windows 11 23H2 on Intel Core i7-10750H, 16GB DDR4-SDRAM, 512GB SSD, 43.9 cm screen Full HD 1920 x 1080, Intel UHD 630 iGPU and NVIDIA GeForce RTX 2060 (6GB GDDR6)

Sony FDR-AX53e Video camera, DJI Osmo Action 3 and Sony HDR-AS30V Sports cams.

Paulo-Arbelez wrote on 1/2/2023, 10:41 AM

Hi,

Thanks for the answer. The laptop is a Lenovo Y510P with 2 cards (the one on the main board, and an extra one occupying the CD/DVD Slot).

The software version is Movie Studio 2023 Platinum.

Please, find an image of the actual config and the task manager showing the performance of the GPUs.

johnebaker wrote on 1/2/2023, 11:33 AM

@Paulo-Arbelez

Hi

. . . . the one on the main board, and an extra one occupying the CD/DVD Slot . . .

Interesting - from the specs for this laptop it only came with one GT 755M fitted, was the second GPU fitted by Lenovo or is a 3rd party after rmarket accessory?

The speed is slow due to no Hardware Acceleration available MMS 2023 supports NVENC, however the GPU's do not.

. . . . SLI activated, and the NVIDIA Recommended SLI Rendering Mode activated. . . .

Try disabling the SLI this may give you a slightly better performance, for some features of MMS 2023 that use Direct 3D.

If you had GPU's that supported NVENC then using them configured for SLI will not double NVENC performance automatically, Windows sees them as a single device.

If kept as separate GPUs ie not configured for SLI, Windows will see them as 2 devices, and, as MMS 2023 is capable of using multiple GPU's, should distribute encoding sessions between the two GPUs to aggregate encoding performance. This certainly happens with my Lenovo laptop running in Hybrid mode - UHD 630 and RTX 2060 GPU's and my PC with the same GPU's

John EB

VPX 16, Movie Studio 2025, and earlier versions 2015 and 2016, Music Maker Premium 2024.

PC - running Windows 11 23H2 Professional on Intel i7-8700K 3.2 GHz, 16GB RAM, RTX 2060 6GB 192-bit GDDR6, 1 x 1Tb Sabrent NVME SSD (OS and programs), 2 x 4TB (Data) internal HDD + 1TB internal SSD (Work disc), + 6 ext backup HDDs.

Laptop - Lenovo Legion 5i Phantom - running Windows 11 23H2 on Intel Core i7-10750H, 16GB DDR4-SDRAM, 512GB SSD, 43.9 cm screen Full HD 1920 x 1080, Intel UHD 630 iGPU and NVIDIA GeForce RTX 2060 (6GB GDDR6)

Sony FDR-AX53e Video camera, DJI Osmo Action 3 and Sony HDR-AS30V Sports cams.