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[1161.88 --> 1165.76] Is it all with using the new Pi compute module? |
[1165.76 --> 1166.24] Yes. |
[1166.68 --> 1174.34] And the funny thing is the Raspberry Pi 4, the one that's been out since I think 2019, that was the Pi Day release back then. |
[1174.82 --> 1178.46] The Raspberry Pi 4 actually has the same processor and capabilities. |
[1178.78 --> 1185.18] But the big difference the compute module has is it exposes the internal PCI Express lane. |
[1185.40 --> 1185.64] Yeah. |
[1185.64 --> 1187.14] And that's the big game changer. |
[1187.26 --> 1189.58] With the Pi 4, you could hack it. |
[1189.64 --> 1194.72] You could desolder a chip on it, the VL805 chip that controls USB 3. |
[1194.78 --> 1199.42] You could desolder that, wire up some jumpers, and get PCI through it. |
[1199.50 --> 1200.86] And a couple people actually did that. |
[1200.92 --> 1204.28] That was the first time that I started working with the compute module. |
[1204.28 --> 1211.96] I was looking at their work because PCI Express support is rudimentary right now on Raspberry Pi OS. |
[1212.38 --> 1216.42] And they were kind of like the groundbreaking people that got that going. |
[1217.06 --> 1224.30] But the compute module 4 includes a standard PCI Express slot on the I.O. board that you can buy with it. |
[1224.84 --> 1230.64] And the cool thing is that a lot of people are building boards around it that have different PCI form factors. |
[1230.64 --> 1244.74] So M.2 slots for things like LTE modems or for storage with NVMe drives or SATA drives that are either in M.2 form factor or using a SATA controller. |
[1244.88 --> 1247.34] And you can plug in hard drives and things like that. |
[1248.00 --> 1250.06] So a really cool thing happened. |
[1250.20 --> 1254.38] Somebody from Broadcom actually contacted me after they saw some of the work I was doing and said, |
[1254.48 --> 1258.88] Hey, we want to see if we can get a hardware RAID controller, an enterprise storage controller. |
[1258.88 --> 1260.88] These things cost like a thousand bucks. |
[1261.54 --> 1263.42] We want to see if we can get that working on a Pi. |
[1263.66 --> 1264.98] And we can't get a Pi. |
[1265.24 --> 1273.82] Like they work at Broadcom, but they had trouble sourcing a Raspberry Pi because the compute module 4 has been in such high demand since the launch. |
[1274.54 --> 1275.78] So they shipped me the card. |
[1275.90 --> 1280.34] They shipped me a storage controller and had me work with a couple of storage engineers. |
[1280.48 --> 1282.22] And we got it working. |
[1282.22 --> 1285.18] So at that point, I had eight drives on the Pi. |
[1285.28 --> 1289.02] But then I found that I could also plug in eight more drives with the card I had. |
[1289.18 --> 1294.96] So I did a live stream and got all 16 hard drives plugged into the Pi and in one giant RAID array. |
[1295.50 --> 1295.72] Wow. |
[1295.92 --> 1296.60] How was performance? |
[1297.10 --> 1297.28] Yeah. |
[1297.34 --> 1297.80] How is it? |
[1297.82 --> 1298.08] Because, right? |
[1298.16 --> 1303.56] I mean, that's always the thing about the Pi is everybody says the Pi 4 is great, except for the IO really limits it now. |
[1303.64 --> 1305.36] But this seems like that changes that a little bit. |
[1305.56 --> 1306.72] It changes it a little bit. |
[1306.78 --> 1308.64] It doesn't fix all the problems. |
[1308.64 --> 1309.54] That's for sure. |
[1309.92 --> 1314.26] The big problem is that it's X1, a Pi 1 lane. |
[1314.46 --> 1314.64] Yeah. |
[1314.88 --> 1318.22] So it's PCI Express Gen 2 by 1. |
[1318.68 --> 1323.44] And the maximum throughput you can get with that is 5 gigabits per second. |
[1324.16 --> 1325.82] But that's theoretical. |
[1326.04 --> 1330.40] So the maximum real-world throughput that I've gotten, I've tested 10 gig Ethernet. |
[1330.48 --> 1331.76] I've tested the storage controller. |
[1331.88 --> 1334.34] I've tested all kinds of different crazy things so far. |
[1334.34 --> 1341.52] And the maximum real-world throughput is about 3.2 gigabits, a little over 400 megabytes per second. |
[1342.06 --> 1345.22] So I threw this hardware RAID storage controller on it. |
[1345.30 --> 1348.02] It could do like 10 gigabytes per second. |
[1348.30 --> 1350.94] But I can only put through 400 megabytes per second. |
[1350.94 --> 1358.84] So it's not going to give you magically access to all of the wonderful things you could throw into like a modern Threadripper PC. |
[1358.84 --> 1367.60] But it does give us a lot more options than with the Pi 4 where you just have USB 3.0, which has its own limitations. |
[1368.22 --> 1373.30] I mean, the fact that you could have redundant storage is an upgrade beyond the fact that it's slightly faster too. |
[1373.76 --> 1380.46] But do you think this kind of is maybe an indication of where the Pi is going to go? |
[1380.58 --> 1384.22] Is this compute module a hint of what we might see maybe in the Pi 5? |
[1384.22 --> 1385.20] I hope so. |
[1385.58 --> 1389.58] Another thing to keep in mind is there are a lot of Pi competitors. |
[1389.94 --> 1393.32] And it's, you know, which one is going to be the Pi killer? |
[1393.48 --> 1404.68] Nothing's going to kill the Raspberry Pi just because the Raspberry Pi has a community and a force behind it that is unparalleled in all the other kind of makerspace single board computing realm. |
[1405.12 --> 1411.98] And don't you think that's kind of the advantage of using the compute module in another board versus getting an SBC that just has all this stuff? |
[1411.98 --> 1416.90] It's like you're getting the Raspberry Pi ecosystem with some of these cool new toys. |
[1417.24 --> 1417.68] Yeah, yeah. |
[1417.84 --> 1423.22] On the flip side, though, there are some boards like the, what is it, the Rockchip RX? |
[1423.58 --> 1425.22] I forget what the specific chip is. |
[1425.38 --> 1425.98] Rockchip Pro. |
[1426.18 --> 1428.54] Yeah, it has a Pi 4 lane. |
[1428.68 --> 1434.38] So you get more bandwidth and more lanes so that you can do more with it and have more I.O. speed. |
[1434.38 --> 1439.34] There's still limitations just based on the fact that the CPU is not super fast. |
[1439.50 --> 1451.04] And even if you give it, you know, let's say we get 10 gigabits or 20 gigabits of throughput, the CPU is going to be limited in other ways on these cheaper ARM SBCs like the Raspberry Pi. |
[1451.42 --> 1461.48] For instance, today I'm doing some testing for a 2.5 gigabit NAS that I'm building with a Pi to see if it can compete with an out of the box NAS from QNAP or Synology or something like that. |
[1461.48 --> 1473.46] And without overclocking the CPU, I can only pump through 1.7 gigabits of network traffic because the way the CPU is architected, all packets go on one core on the CPU. |
[1473.62 --> 1475.80] It's a four core CPU, so it could support more. |
[1476.18 --> 1481.40] But the way the network throughput works on the Pi, it's stuck on one core and it maxes out. |
[1481.52 --> 1483.50] So you have to overclock it to get more speed. |
[1483.70 --> 1487.50] I think, you know, there are two things I really want to see in the next Pi. |
[1487.64 --> 1489.76] One is maybe more PCI bandwidth. |
[1489.76 --> 1492.54] The other is just a faster CPU. |
[1492.82 --> 1494.04] And we've seen what's possible. |
[1494.22 --> 1505.08] Apple with their M series, even the A series, just blows away the competition in terms of performance per watt and, you know, single threaded performance for any kind of mobile device. |
[1505.70 --> 1510.34] So I think that the ARM SBCs have a bright future. |
[1510.34 --> 1517.46] And that's, I'm hoping that IO speed and CPU speed, which is becoming the bottleneck for a lot of my projects. |
[1517.90 --> 1520.34] Those are the two things I really hope to see improved. |
[1520.76 --> 1522.82] I wonder where you come up with some of these ideas, man. |
[1522.94 --> 1524.32] Now your head must be an interesting place. |
[1524.32 --> 1529.62] If you want to come over to my house sometime, I will show you the pile. |
[1529.78 --> 1532.82] I have so many projects that I really, really want to work on. |
[1533.40 --> 1536.30] And I don't think I'll get to them in the next few months, unfortunately. |
[1536.60 --> 1537.16] Are you near me? |
[1537.24 --> 1537.90] Are you in Raleigh? |
[1537.98 --> 1539.88] No, I'm in St. Louis, Missouri. |
[1540.10 --> 1543.16] But, you know, fly over here after the coronavirus is over. |
[1543.56 --> 1545.16] Oh, maybe one day we'll do another road trip. |
[1545.24 --> 1545.56] Hey, Chris? |
[1545.90 --> 1546.52] Yeah, for sure. |
[1546.60 --> 1547.74] I don't think that's a maybe. |
[1547.88 --> 1549.02] Nothing about that's a maybe. |
[1549.02 --> 1553.84] So if we were to come visit, what kind of stuff would we see you self-hosting in your place? |
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