GPUs can now use PCIe-attached memory or SSDs to boost VRAM capacity —Panmnesia's CXL IP claims double-digit nanosecond latency

[erek]

"At the heart of Panmnesia's solution is a CXL 3.1-compliant root complex with multiple root ports and a host bridge featuring a host-managed device memory (HDM) decoder. This sophisticated system effectively tricks the GPU's memory subsystem into treating PCIe-connected memory as native system memory. Extensive testing has demonstrated impressive results. Panmnesia's CXL solution, CXL-Opt, achieved two-digit nanosecond round-trip latency, significantly outperforming both UVM and earlier CXL prototypes. In GPU kernel execution tests, CXL-Opt showed execution times up to 3.22 times faster than UVM. Older CXL memory extenders recorded around 250 nanoseconds round trip latency, with CXL-Opt potentially achieving less than 80 nanoseconds. As with CXL, the problem is usually that the memory pools add up latency and performance degrades, while these CXL extenders tend to add to the cost model as well. However, the Panmnesia CXL-Opt could find a use case, and we are waiting to see if anyone adopts this in their infrastructure."

Source: https://www.techpowerup.com/324083/...-gpu-memory-with-add-in-dram-card-or-even-ssd

 

[Axman]

Panmnesia sounds like a the Office-themed psychological horror video game where Pam gets hit by a bus and gets amnesia, and Jim has to track her down and sneak old photos and mementos into her hospital room, then later motels, her new office, her apartment, her new boyfriend's apartment, their first house after they get engaged, etc., in order to finally jog her memory back and regain his seemingly forever-lost love.

There are side-quests where he has to work with Dwight and Micheal and the rest who are being framed for crimes committed by Ryan in his ruthless climbing of the corporate ladder, where Jim can unlock extra memos and paperwork to plant in his quest to restore Pam.

At a key point leading into the third act, you must complete a stealth mission as Kevin or Phylis, and depending on who you chose will alter the ending. Throughout the game, in all scenarios, any mistakes you make may increase the chance that you alert Toby who can eventually expose you. He helps Pam's new man file a restraining order against you, and the game is over.

There are a series of dark endings where you win back Pam but she never gets her memories back. She just thinks this is all a new relationship; she loves you, but she is a different woman, who you jealously stole from her unwittingly new true love.

If you win Pam back and restore all her memories, you unlock New Game Plus mode, where it turns out that both Pam and Jim were hit by the bus, Pam got amnesia, Jim's in a coma, and you have to play as Creed with Creed Vision Mode enabled and the stealth missions are played using either Meredith or Robert California.

 

[GoldenTiger]

Panmnesia sounds like a the Office-themed psychological horror video game where Pam gets hit by a bus and gets amnesia, and Jim has to track her down and sneak old photos and mementos into her hospital room, then later motels, her new office, her apartment, her new boyfriend's apartment, their first house after they get engaged, etc., in order to finally jog her memory back and regain his seemingly forever-lost love.

There are side-quests where he has to work with Dwight and Micheal and the rest who are being framed for crimes committed by Ryan in his ruthless climbing of the corporate ladder, where Jim can unlock extra memos and paperwork to plant in his quest to restore Pam.

At a key point leading into the third act, you must complete a stealth mission as Kevin or Phylis, and depending on who you chose will alter the ending. Throughout the game, in all scenarios, any mistakes you make may increase the chance that you alert Toby who can eventually expose you. He helps Pam's new man file a restraining order against you, and the game is over.

There are a series of dark endings where you win back Pam but she never gets her memories back. She just thinks this is all a new relationship; she loves you, but she is a different woman, who you jealously stole from her unwittingly new true love.

If you win Pam back and restore all her memories, you unlock New Game Plus mode, where it turns out that both Pam and Jim were hit by the bus, Pam got amnesia, Jim's in a coma, and you have to play as Creed with Creed Vision Mode enabled and the stealth missions are played using either Meredith or Robert California.

Chatgpt? Is that you?

 

[Axman]

Chatgpt? Is that you?

I am offended, Sir.

 

[erek]

I am offended, Sir.

GPUs can now use PCIe-attached memory or SSDs to boost VRAM capacity —Panmnesia's CXL IP claims double-digit nanosecond latency​

https://www.tomshardware.com/pc-com...and-gpu-memory-capacity-via-panmnesias-cxl-ip

 

[GoldenTiger]

I am offended, Sir.

I forgot you are the master of tall tales . I read the story now and lol'd.

 

[KD5ZXG]

DMA, been there, done that...

 

[GoodBoy]

This wouldn't get used in gaming GPU's as it would make them much more viable for AI workloads where the vRam is a significant part of the equation.

So, even if this was ever implemented in Nvidia or AMD silicon, it would be disabled in consumer GPU parts, probably laser etched so it is non-functional. Otherwise bios flash and boom consumer GPU = AI part.

And if left enabled in a consumer GPU part, prices would go nuts as we would be competing with corps buying them up for AI. End result for us would be equivalent to the Crypto-booms.

***
Maaaybe in some ultra low end part that has no onboard vRam and is too weak to be useful for AI workloads, might have a place. Budget laptops.

 

[lostinseganet]

This wouldn't get used in gaming GPU's as it would make them much more viable for AI workloads where the vRam is a significant part of the equation.

So, even if this was ever implemented in Nvidia or AMD silicon, it would be disabled in consumer GPU parts, probably laser etched so it is non-functional. Otherwise bios flash and boom consumer GPU = AI part.

And if left enabled in a consumer GPU part, prices would go nuts as we would be competing with corps buying them up for AI. End result for us would be equivalent to the Crypto-booms.

***
Maaaybe in some ultra low end part that has no onboard vRam and is too weak to be useful for AI workloads, might have a place. Budget laptops.

But gamers have modded gpu's before and added RAM. Its doable. This may be a more professional version.