<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> To whom it may concern I hope here is the right place to ask about envytools. I am working on securing our GPUs in the case of an OpenStack infrastructure, where GPUs can be bound and unbound to VMs from different clients. I wanted to use envytools to retrieve the VBIOS our cards, then check after each VM deletion if somebody changed the VBIOS (potentially a threat). The VBIOS would be read again and compared to the previously stored one. So we would like to know: <ul data-sourcepos="8:1-11:0" dir="auto"> <li data-sourcepos="8:1-8:127">is the card harmed in any way by reading the BIOS (I guess not, as we simply read);</li> <li data-sourcepos="9:1-9:140">the utility also suggests that the cards have a second VBIOS. Is this second VBIOS also read at the same time? If not, how to read it? </li> <li data-sourcepos="10:1-11:0">the VBIOS file read is larger than the one that could be read using the NVFlash utility (1 Mo for envytools, against 230 ko for NVFlash). I guess it is not an issue, but could you explain why this difference occurs?</li> </ul> Thanks for your help. Best regards, Jean Chorin </body> </html>