Check requestPeers of WifiP2pManager As per documents it seeks PeerListListener which returns WifiP2pDeviceList carrying list of WifiP2pDevice which carries deviceAddress, deviceName, primaryDeviceType, secondaryDeviceType, status and other attributes.
The latest revision of the IEEE 754:2008 standard does indeed define hardware decimal floating point numbers, using the representations shown in the software referenced in the question. The previous version of the standard (IEEE 754:1985) did not provide decimal floating point numbers. Most current hardware implements the 1985 standard and not the 2008 standard, but … Read more
There’s a patent for combined popcnt, bit scan forward / reverse: US8214414 B2 – Combined set bit count and detector logic Abstract A merged datapath for PopCount and BitScan is described. A hardware circuit includes a compressor tree utilized for a PopCount function, which is reused by a BitScan function (e.g., bit scan forward (BSF) … Read more
You can see the disk information using a command like !df -h. To see CPU specs, !cat /proc/cpuinfo. For memory, !cat /proc/meminfo. Here’s an example notebook: https://colab.research.google.com/notebook#fileId=1_x67fw9y5aBW72a8aGePFLlkPvKLpnBl Edit: Colab now offers a Pro version which offers double the amount of disk available in the free version.
A “hardware thread” is a physical CPU or core. So, a 4 core CPU can genuinely support 4 hardware threads at once – the CPU really is doing 4 things at the same time. One hardware thread can run many software threads. In modern operating systems, this is often done by time-slicing – each thread … Read more
Some instruction sets are limited to one bit shift per instruction. And some instruction sets allow you to specify any number of bits to shift in one instruction, which usually takes one clock cycle on modern processors (modern being an intentionally vague word). See dan04’s answer about a barrel shifter, a circuit that shifts more … Read more
I have been able to work around this problem by iterating over the webcam indexes until reading that camera no longer returns anything: index = 0 arr = [] while True: cap = cv2.VideoCapture(index) if not cap.read()[0]: break else: arr.append(index) cap.release() index += 1 return arr This method returns a list of all indexes that … Read more
The answer revolves around the purpose of threads, which is parallelism: to run several separate lines of execution at once. In an ‘ideal’ system, you would have one thread executing per core: no interruption. In reality this isn’t the case. Even if you have four cores and four working threads, your process and it threads … Read more
There seems to be no direct “python” way of doing this. On modern PC hardware, there usually is an UUID stored in the BIOS – on Linux there is a command line utility dmidecode that can read this; example from my desktop: System Information Manufacturer: Dell Inc. Product Name: OptiPlex 755 Version: Not Specified Serial … Read more