I'm currently analyzing some data using Excel. Not too big, 3 sheets with 12k rows each, and some simple formulas containing lookups. Whenever i change the input date, Excel is re-calculating things using all 8 cores of my Core i7 desktop CPU for about 30s.
Last year, I wanted to update ClearCase, because my version caused a blue-screen every few days and made Visual Studio hang for a few minutes several times per hour. As the update failed to install, I called the IT guy, who tried a lot of things. In the end, he gave up. I had no IBM Rational software installed anymore and could not install any IBM Rational software anymore. Instead of taking this as a sign, he re-imaged my PC.
The reality is that javascript is the universal language at the moment of 'get stuff done'.
Only if your platform is a browser. These are the things i lately worked on, and Javascript would be of no use in any of them: - Embedded board doing hard realtime IO signals (100us response time) and Ethernet/IP communication on a 8bit CPU with 4KB RAM - Windows device driver for a special PCIe card receiving continuous 80MB/s data from an image sensor into system RAM. - soft real-time image sensor processing the stream data with latency below 3ms: interpolate dead pixels, normalize gain, apply 2d band stop filter - soft real-time image post-processing on 60MB/s stream, with latency below 20ms: illuminated area & motion detection, spatial and temporal noise reduction, multi-resolution non-linear detail enhancement processing, adjust contrast & brightness
Above processing must run on a desktop quad-core with max 40% CPU load. It required manual threading and hand-written vector code (SSE intrinsics) to reach the performance.
An update mostly consists of a set of binaries (EXE and DLL), where the source code is only slightly changed compared to the previously shipped version. With the process they did up to now, they shipped all altered files as a whole in an update, likely zipped, but not being based on the previous binaries.
When changing the source a little (fixing a bug, adding some functionality), the binary (DLL, EXE) changes a lot, because if one function gets slightly longer due to an added check, all following functions are moved a little to make room. As any caller references the function by address, many code places change for each moved method. Tools like bsdiff and courgette anaylze the old and the new binary, and can encode very efficiently what has moved and where references have to be updated. A Chromium update, where a 10MB DLL has changed (and MS would have shipped the whole file, maybe compressed to 6MB), can be encoded using courgette into a 0.08MB differential update.
If you ever get to price out a Dell or HP machine with the same features as a Mac, you're ending up paying more than a Mac.
That's partly because Dell does't let you select consumer GPUs for workstations*, and partly obscene pricing for extra RAM, disk and CPU. The last workstation I needed, I was required to buy from Dell (company-forced), and when giving my build order to the IT guy, I complained how expensive Dell is. He replied, don't care, when ordering by phone and mentioning you buy lots from Dell, the price goes down to a rerasonable level. He was right, the 2500€ shown in Dell's web shop was reduced to 1600€..
* For a development project a few years ago, I needed the GPU to support a specific pixel shader version, and DL-DVI for the 2560x1600 screen. but not much graphics power, and no CAD support. A 100€ entry-level passive-cooling gaming card would have been a good choice, but was not configurable. One only had the choice between close-to-obsolete underpowered CAD cards (150€, not supporting the pixel shader level), and power-hungry CAD cards with noisy fans (800€+).
I wonder how the car got under the trailer. Is there no regulation for trailer impact protection? In Europe, trailers are required have strong bars on sides and back of the trailer to prevent cars getting under. The sides also must have flat covers, which improve visiblity. Here's an example: https://de.wikipedia.org/wiki/...
Technically, LTE goes a different rout than (W)CDMA. (W)CDMA means several transmitters sending on the same frequency at the same time, using different modulation codes. From the sum signal, a receiver can pick out each transmitter's signal by correlating with the transmitter's code. On LTE, transmitters never send on the same frequency at the same time. They always use separate frequencies and/or different time slots.
In Germany, I'd say at least 80% of all private smartphones have Whatsapp installed. SMS is limited to short text. Whatsapp has emoticons (some people cannot communicate without 'em), sending pictures, video, and you current location, if you want to meet e.g. in a big park. Phone number change afaik works, you just have to link old and new number somewhere in the options. With SMS, this doesn't work.
You cannot get a $0.15/kWh power plan in Germany for private homes, only for large industrial plants. The cheapest price (by kWh) I can get for my German home is 0.23€ ($0.26) / kWh plus 60€ ($69) per year, so it's 0.25€ ($0.28) / kWh in total.
Those machines seem to be expensive in the US. In Germany, you can buy 10 different models for under 270€ (= 305 USD, including 19% VAT), and some time last year, Amazon Germany listed several models for around 200 USD. I bought one for 180€, and the ROI vs. coffee cups was within a year.
320x240x8bit is 76800 bytes, more than 64KB. It required bank switching, but it was easier than the GP wrote. VRAM was still linear, but you needed a VESA BIOS call to change the 64KB VRAM bank accessible in the 64KB video memory segment. Of 320x240, 204.8 lines fit in the first bank, the remaining ones in the second bank. As a display line split in two banks is very unhandy, you could increase the virtual resolution to 512x240 an had 128 full lines in bank 0 and the other 112 lines in bank 1.
Well, for me it seems that most of refugee-related destruction in Germany seems to come from Germans, who in certain areas set newly built refugee shelters on fire. In Hamburg, I live very close two container camps housing 850 mostly Syrian refugees. I've talked with several refugees, helped them find the right trains or groceries when they cannot read English or German. I haven't seen any "destruction", crime or even aggression from them.
DICOM Printers for digital X-ray images need a lot of code for the network protocols and actual printing. I've seen some older models which contain a PC inside running Windows NT with software to convert between DICOM on the outside and the actual printer's native interface. Of couse, that machine is on the network, because all the X-ray machines need to print X-rays.
I need both floating point and base conversion very often and interchangeably. In XP, I could use both directly. In Win7/8/10, I can use only one of both at a time.
Imo, People buying a 400$ phone every two years are a minority. In the US, they're mostly served by Apple. In Western Europe, they're mostly served by Samsung. Anywhere else, people are smart enough to not spend that much money on phones.
Yeah, but Calc(ulator) of Windows 7 is worse than the one from XP. With XP-calc, you can use floating point calculation and do hex decimal conversion with a single click. With Win7-calc, you have to change the UI mode in the menu: "scientific" mode has FP, but no hex support, and "programmer" mode has hex but no FP support. The Win10-calc seems to be limited like on Win7, but additionally has a degraded UI.
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I'm currently analyzing some data using Excel. Not too big, 3 sheets with 12k rows each, and some simple formulas containing lookups. Whenever i change the input date, Excel is re-calculating things using all 8 cores of my Core i7 desktop CPU for about 30s.
Last year, I wanted to update ClearCase, because my version caused a blue-screen every few days and made Visual Studio hang for a few minutes several times per hour. As the update failed to install, I called the IT guy, who tried a lot of things. In the end, he gave up. I had no IBM Rational software installed anymore and could not install any IBM Rational software anymore. Instead of taking this as a sign, he re-imaged my PC.
Right, having to use ClearCase immediately came to my mind when reading the title. But finally, we're migrating to git later this year.
With root, you can install "XPosed framework" and "XPrivacy". This allows fine-grained control per app for lots of rights.
The reality is that javascript is the universal language at the moment of 'get stuff done'.
Only if your platform is a browser. These are the things i lately worked on, and Javascript would be of no use in any of them:
- Embedded board doing hard realtime IO signals (100us response time) and Ethernet/IP communication on a 8bit CPU with 4KB RAM
- Windows device driver for a special PCIe card receiving continuous 80MB/s data from an image sensor into system RAM.
- soft real-time image sensor processing the stream data with latency below 3ms: interpolate dead pixels, normalize gain, apply 2d band stop filter
- soft real-time image post-processing on 60MB/s stream, with latency below 20ms: illuminated area & motion detection, spatial and temporal noise reduction, multi-resolution non-linear detail enhancement processing, adjust contrast & brightness
Above processing must run on a desktop quad-core with max 40% CPU load.
It required manual threading and hand-written vector code (SSE intrinsics) to reach the performance.
An update mostly consists of a set of binaries (EXE and DLL), where the source code is only slightly changed compared to the previously shipped version.
With the process they did up to now, they shipped all altered files as a whole in an update, likely zipped, but not being based on the previous binaries.
When changing the source a little (fixing a bug, adding some functionality), the binary (DLL, EXE) changes a lot, because if one function gets slightly longer due to an added check, all following functions are moved a little to make room. As any caller references the function by address, many code places change for each moved method.
Tools like bsdiff and courgette anaylze the old and the new binary, and can encode very efficiently what has moved and where references have to be updated.
A Chromium update, where a 10MB DLL has changed (and MS would have shipped the whole file, maybe compressed to 6MB), can be encoded using courgette into a 0.08MB differential update.
Get a better cell phone plan. WinSIM offers 2GB, unlimited calls and text for 7€ / month on O2 network.
If you ever get to price out a Dell or HP machine with the same features as a Mac, you're ending up paying more than a Mac.
That's partly because Dell does't let you select consumer GPUs for workstations*, and partly obscene pricing for extra RAM, disk and CPU. The last workstation I needed, I was required to buy from Dell (company-forced), and when giving my build order to the IT guy, I complained how expensive Dell is. He replied, don't care, when ordering by phone and mentioning you buy lots from Dell, the price goes down to a rerasonable level.
He was right, the 2500€ shown in Dell's web shop was reduced to 1600€..
* For a development project a few years ago, I needed the GPU to support a specific pixel shader version, and DL-DVI for the 2560x1600 screen. but not much graphics power, and no CAD support. A 100€ entry-level passive-cooling gaming card would have been a good choice, but was not configurable. One only had the choice between close-to-obsolete underpowered CAD cards (150€, not supporting the pixel shader level), and power-hungry CAD cards with noisy fans (800€+).
Likely, the $370M was in 1973's dollars, which would be around $2B in 2016 dollars.
I wonder how the car got under the trailer. Is there no regulation for trailer impact protection?
In Europe, trailers are required have strong bars on sides and back of the trailer to prevent cars getting under. The sides also must have flat covers, which improve visiblity.
Here's an example: https://de.wikipedia.org/wiki/...
If you don't have line-in, look for "car fm transmitter". There are also some with BT, like "BC09 car Bluetooth charger FM transmitter".
You can also order a nice USB-powered BT audio receiver (TSBT35A24) and a cigar lighter to USB adapter from China for less than $5 shipped.
Technically, LTE goes a different rout than (W)CDMA.
(W)CDMA means several transmitters sending on the same frequency at the same time, using different modulation codes. From the sum signal, a receiver can pick out each transmitter's signal by correlating with the transmitter's code.
On LTE, transmitters never send on the same frequency at the same time. They always use separate frequencies and/or different time slots.
Oh, and it has group chat!
In Germany, I'd say at least 80% of all private smartphones have Whatsapp installed. SMS is limited to short text. Whatsapp has emoticons (some people cannot communicate without 'em), sending pictures, video, and you current location, if you want to meet e.g. in a big park.
Phone number change afaik works, you just have to link old and new number somewhere in the options. With SMS, this doesn't work.
You cannot get a $0.15/kWh power plan in Germany for private homes, only for large industrial plants.
The cheapest price (by kWh) I can get for my German home is 0.23€ ($0.26) / kWh plus 60€ ($69) per year, so it's 0.25€ ($0.28) / kWh in total.
Latest statistics say the average price for private customers is 0.28€ / kWh:
http://de.statista.com/statist...
Those machines seem to be expensive in the US. In Germany, you can buy 10 different models for under 270€ (= 305 USD, including 19% VAT), and some time last year, Amazon Germany listed several models for around 200 USD. I bought one for 180€, and the ROI vs. coffee cups was within a year.
320x240x8bit is 76800 bytes, more than 64KB. It required bank switching, but it was easier than the GP wrote. VRAM was still linear, but you needed a VESA BIOS call to change the 64KB VRAM bank accessible in the 64KB video memory segment. Of 320x240, 204.8 lines fit in the first bank, the remaining ones in the second bank. As a display line split in two banks is very unhandy, you could increase the virtual resolution to 512x240 an had 128 full lines in bank 0 and the other 112 lines in bank 1.
That Sony model was mentioned in the second link. It can only display PDF, nothing else.
Well, for me it seems that most of refugee-related destruction in Germany seems to come from Germans, who in certain areas set newly built refugee shelters on fire. In Hamburg, I live very close two container camps housing 850 mostly Syrian refugees. I've talked with several refugees, helped them find the right trains or groceries when they cannot read English or German. I haven't seen any "destruction", crime or even aggression from them.
DICOM Printers for digital X-ray images need a lot of code for the network protocols and actual printing. I've seen some older models which contain a PC inside running Windows NT with software to convert between DICOM on the outside and the actual printer's native interface. Of couse, that machine is on the network, because all the X-ray machines need to print X-rays.
On the photo, you can see that a big Porsche company logo covers around 20% of the solar cell area. Did they account for that in this number?
I need both floating point and base conversion very often and interchangeably. In XP, I could use both directly. In Win7/8/10, I can use only one of both at a time.
Imo, People buying a 400$ phone every two years are a minority. In the US, they're mostly served by Apple. In Western Europe, they're mostly served by Samsung. Anywhere else, people are smart enough to not spend that much money on phones.
Yeah, but Calc(ulator) of Windows 7 is worse than the one from XP.
With XP-calc, you can use floating point calculation and do hex decimal conversion with a single click. With Win7-calc, you have to change the UI mode in the menu: "scientific" mode has FP, but no hex support, and "programmer" mode has hex but no FP support.
The Win10-calc seems to be limited like on Win7, but additionally has a degraded UI.