Recent content by Keylimesoda

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Could you offload certain CPU instructions to a co-processor over PCI-E bus?

I'm hopeful, but not optimistic that the Quark will support SSE2 anytime soon. I'm not sure how you'd "bolt-on" SSE2 support without messing with the decode section of underlying Pentium.
- Keylimesoda
- Post #3
- Apr 14, 2014
- Forum: Ask a Technical Professional
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Could you offload certain CPU instructions to a co-processor over PCI-E bus?

I've been working with the Intel Quark (x1000 SoC) lately. For old binary compatibility reasons, I'd like to be able to run the vector instructions that are missing on the Quark (SSE2 in particular). Would I be better off writing an emulator that intercepts and runs the instructions in a...
- Keylimesoda
- Thread
- Apr 12, 2014
- Replies: 4
- Forum: Ask a Technical Professional
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Moving from pfsense to consumer router for home use?

I think this is the opposite of what I want. This is probably no more performant than my beefy x86 config, and is more difficult to use than even pfsense.
- Keylimesoda
- Post #7
- May 16, 2013
- Forum: Networking
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Moving from pfsense to consumer router for home use?

Long answer? :)
- Keylimesoda
- Post #3
- May 16, 2013
- Forum: Networking
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Moving from pfsense to consumer router for home use?

A couple years ago I moved from a DGL-4500 to pfsense running on an old Core 2 Duo laptop. I've been pleased with the throughput and QOS of the pfsense, simultaneously managing multiple netflix streams, bittorrent, VPN, browsing, online gaming, and so on without a hiccup. I feel like I'm...
- Keylimesoda
- Thread
- May 16, 2013
- Replies: 11
- Forum: Networking
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The Official PS4 Thread

It occurs to me, architecturally, the PS4 is very similar to the Xbox 360, just with a different instruction set. If the Xbox Next is similar to PS4, we may see xbox next offer back compat for both Xbox and Xbox 360.
- Keylimesoda
- Post #391
- Feb 21, 2013
- Forum: Console Gaming
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The Official PS4 Thread

The PS4 will likely give low level access to the system via something like libgcm. PCs generally operate on the higher-level languages like OpenGL and DirectX. Main reason you'll rarely see libgcm on a PC (even with Linux) is that there's too much variety in hardware in PCs. Writing in DirectX...
- Keylimesoda
- Post #342
- Feb 21, 2013
- Forum: Console Gaming
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The Official PS4 Thread

You've hit on the part that is sexiest to me. Having 8GB of shared RAM really makes the GPU a viable computing resource if it can directly share the same memory space with the CPU. This is the ideal setup for an APU, since it can fully utilize and optimize for computations against both CPU and...
- Keylimesoda
- Post #332
- Feb 21, 2013
- Forum: Console Gaming
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The Official PS4 Thread

The point is that it would take at least 3+ Jaguar cores to equal the processing power of a single Ivy Bridge core. So you won't be able to code 1:1, you'd have to spread the workload out across multiple cores.
- Keylimesoda
- Post #326
- Feb 21, 2013
- Forum: Console Gaming
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The Official PS4 Thread

CPU architecture means that PC games won't be straight ports. Most PC games today can take advantage of 2-3 cores. This is why Intel beats AMD CPUs for most gaming, Intel has significant per-core performance lead right now. Splitting the workload from a PC game evenly between 8 smaller...
- Keylimesoda
- Post #311
- Feb 20, 2013
- Forum: Console Gaming
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Troubleshooting disk bottleneck on an HP Proliant

Found a bit more info on configuration here: http://planet.jboss.org/post/hp_smart_array_e200i_performance;jsessionid=3423B39A166017258C2ABF29385690E4 It looks like with the command-line utility, you can force the controller write cache to operate in non-battery mode: -->ctrl slot=0 modify...
- Keylimesoda
- Post #26
- Dec 31, 2012
- Forum: Memory and Storage
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Troubleshooting disk bottleneck on an HP Proliant

True that. Not to mention inefficient in power use. And exotic hardware issues (see: this thread). Thankfully I have cheap power and an out-of-the-way basement storage room, and too much spare time on my hands.
- Keylimesoda
- Post #24
- Dec 30, 2012
- Forum: Memory and Storage
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Troubleshooting disk bottleneck on an HP Proliant

It'll end up serving as a headless WMC server (1 GB RAM per extender), as well as a NAS (CIFS, AFP, NFS), and it's nice to have some headroom for transcoding duties. Still even with all that, it is overkill, and I'm a sucker for dirt cheap value hardware. And I love playing with server-class...
- Keylimesoda
- Post #22
- Dec 30, 2012
- Forum: Memory and Storage
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Troubleshooting disk bottleneck on an HP Proliant

I got the whole server (ML350 G5) for $350. It's a dual quad-core Xeon (Core arch, L5335 proc) with 8GB of RAM (max 32GB), 6 LFF HDD bay (or 8 SFF), and the RAID controller (SATA I or SAS). It also has a few PCI-E x4 slots, a handful of PCI-X, and a hardware accelerated NIC. Oh, and...
- Keylimesoda
- Post #19
- Dec 29, 2012
- Forum: Memory and Storage
K
Troubleshooting disk bottleneck on an HP Proliant

So, I found a bit more info: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01149818 Apparently, by default, the controller disables the cache on the physical drives themselves, since they can't be trusted in power loss scenarios. So, with the BBW cache disabled...
- Keylimesoda
- Post #17
- Dec 29, 2012
- Forum: Memory and Storage

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