The Milky Way is only about 100k ly across. A single space able civilization could spread throughout the entire galaxy in only several million years using technology that we currently have access to. A few thousand years from now, spreading over a galaxy will be child's play. Not coming into contact with another space alien life form pretty much means an extinction event happens often enough to kill off such civilizations or we're one of the first in our galaxy.
OpenNTP uses a pool of HTTPS servers to do basic sanity checks against the NTP time. It does a kind of simple NTP using TLS, then uses NTP against your time servers. If the NTP time is too far off from the TLS time, it rejects it. Pretty much all of the practical security of NTPSEC without all of the accuracy reducing overhead.
Except when your OS sleeps an HT "core", it effectively deactivates HT for that real core. One of the reasons Win7 runs better than XP on HT cpus is better thread scheduling. It will attempt to use only one HT core per physical core, then place the virtual core into a deep sleep mode, allowing the CPU to run as if HT is disabled.
From the beginning, one of the benefits of hypertheading is hiding the cost of cache misses. Intel has a proof of concept program that uses one thread to prefetch data, which means it gets hit with a cache miss, and the other thread doesn't get the cache miss because the data is ready just in time. Hyperthreading has a 1 cycle context switch overhead, allowing it to quickly change threads for even the shortest stalls.
The biggest issue HT has against it is split resources, especially the L1 cache. Many types of server workloads are cache sensitive. As for games, many games don't scale well with thread count because of synchronization overhead. HT only gives 10%-20% average gain, meaning each thread runs at 60% peak. The aggregate is a gain for overall throughput, but for single-threaded performance, it takes a hit.
Intel CPUs is actually quite cheap. I paid less for my CPU than my PSU, GPU, SSD, case, and monitor. Just because AMD is cheaper doesn't mean I'm going to saving much money relative to the whole.
Except an object in free fall due to gravity is in an inertial frame. This means you are not actually accelerating. Gravity is not proper acceleration. Making gravity a force changes this and breaks a lot of fundamental things. One can tell if they're in an accelerating frame. If you're in a free fall, you can't tell which way you're "accelerating" because you are not accelerating.
To be fair, if you spend two hours every morning dressing up to go to work to program, your personality is probably not one compatible with being a great programmer. Most of the super great programmers have a personality of "take me as I am or GTFO". Of course I'm not a " super great", but I do believe I'm above average. I still need to be at least marginally concerned about my appearance. I shower and wear clean clothes, and about once a month I shave. That seems good enough for me.
Funny that the opposite is happening. As the market gets flooded with more noise, it gets harder and harder to replace me. For a large company like Google or Microsoft, talent gravitates towards them. But for smaller companies, they only get what they can find. I may not be getting paid the max, but I have a lot of job security, have great benefits, and get to work in a low stress environment near family.
Working Saturdays. Great way to create negative value. Technical debt everywhere! Humans cannot sustain maximum for long. After maximum is reached, a long cooldown time is required before productivity is back up to normal. I've been confronted in the past about why I was not only leaving hours before everyone else, but why I was leaving before 4p. I just said that I reached the end of my productivity for the day and I was making too many mistakes.
Of course the only teams that miss their deadlines are the one with mandatory death marches. They're also like a rut. Once your entire team is burnt out, they can't be productive again for a while. My personal experience is I can do about 20% more output for about a month, but then I drop down to about -20% output until I get about a month of relaxation. I usually spend the next month doing about -50% until I feel better, then I'm back at 100%. The overall output is much lower, but we do have a yearly burst that must be handled. We're putting a lot of work into reducing that burst.
Increased aggressiveness is a well known trait of testosterone. Of course someone that is more aggressive is going to be more interested in forms of aggression. Did you know that women who were subjected to high levels of testosterone during fetal development are nearly identical to men in interests? It's as if these women completely ignore cultural pressure and do what interests them. Wow, imagine that.
Flip side. Men who had low levels of testosterone during fetal development are much more feminine and have feminine interests. ZOMG! It's like testosterone changes people some how. You do realize that men and women really are the same, the main difference is testosterone levels.
Einstein. Guess what the number one way that is highly correlated with higher testosterone levels. Let me give you a hint. It involves having a penis.
Your description of "toxic masculinity" is pretty much driven by women's expectations of men. Very few men want to act that way, but are rewarded by women for doing so. Fix women first and the problem will solve itself.
Women being attracted to the "bad guy" and good guys never win, are two concepts that have a lot of truth to them. Every woman I've known falls into one of two categories. They're rational and find a good spouse or are irrational and find a jerk. I tell them it won't work out, and a year later they're crying about how all guys are so mean and why can't they find a nice guy. STOP CHOOSING JERKS! Of course most women I know fall into this category and perpetuate the sterotype of men being jerks by always selecting jerks.
Men have the same issue, except with beauty. So many men overlook all of the issues and focus on how pretty a girl is. Don't do it dude, it's not going to work out, she's a needy drama queen. I'm sorry, but a person who cares so much about what others think about them, are rarely stable. Spending 2-3 hours dolling up every night to go out just means they need attention and lots of it. Give me a confident educated woman, that's sexy. Of course I like the eye candy, but that doesn't mean I want to live with them or have anything to do with their drama.
It's kind of genetics. From what I've read it's more testosterone exposure during fetal development, which is typically driven by testes but not always. There are cases were the mother exposes the fetus to high levels of testosterone and women born from these situations are more aggressive, less social, and more masculine all around, including stereotypical male interests.
Good programmers need to be creative. Logic lets you decide if something is good or bad, but you still need to create the "something" in order to judge it. When you combine logic and creativity, you get logically created designs.
Kind of an interesting discussion. One of the interesting things that have come out of the whole blackhole information paradox is that tossing an elementary particle into a blackhole increases its spherical surface area by exactly one square planck. They said if you run that backwards, it means you can store at most 1 bit(explicitly state binary bit of "data") of information in a cubic planck. That is the density of a blackhole.
It seems that the current set of elementary particles are the highest density you can get. In that sense, information is quantized. If information in quantized and mass is information.
Either way, I can't wait to see the results of this stuff.
Same thing with all of my computers and browsers. Ohh wait... I just went to their home page, forbes.com, then clicked on the link in/. and it suddenly worked. Probably a broken cookie or something.
I wonder why he'd try to make a big deal about 2% when obviously it's not that much. Just enough to about cover inflation. Did it come off as if he was lauding his position to be giving you a raise?
There is a related key attack that doesn't affect AES128 but reduces AES192 to 2^176 ops and AES256 to 2^119 ops. It does require that the key you're trying to attack does not change during the duration of the attack and requires you to have a way to influence the generation of new keys in known ways. By sending in data to the remote server and having it encrypt the data, you can see how the data changes.
A practical attack like trying to attack a web sever's session key would require that you generate at least 2^119 sessions, assuming a new key per session, which is not the norm. Then you would need to send 2^119 payloads of data and retrieve the information. You still need to process the data.
Once you include the 15 packets of TCP+SSL round trips and even minimum 64byte packets, that's 960 bytes. Lets assume at least 1024 byte because I'm ignoring other overheads like TCP, HTTP headers, and session cookies. 1024 bytes times 2^119 is 618,970,019,642,690,137,449,562,112 TiB.
He views it how it is. Most people not only don't know outside their domain, but are horrible at the one they specialize in. Heck, half of our customers that have their firewalls blocking our ability to transfer files via SFTP, ask us how to configure their firewalls to open ports because they don't know how to do it. I'm talking about network admins. Freaking networking admins asking us how to do their job. Sometimes they just give us admin access to their firewalls and tell us to figure it out.
Another company we worked with had this nasty habit of sending us their private key every time they change their keys. It seemed like they changed their key pairs every few months because they didn't know how to keep their old one when they upgraded their servers. So they just generated a new key and had it signed. Then they'd EMAIL us their public and private key. A freaking Verisign signed private key that they use on their website.
Another company was freaking out that we didn't encrypt our data at rest, then requested that we communicated sensitive data via FTP and legacy zip format to encrypt the payload. Not only did it have known password issues that allowed even the strongest passwords to be easily broken but they required that we used a 6 digit all lower case password and refused to listen to us about it being incredibly weak. Luckily I brought this to the attention of the VP, and we were in the process of phase out all FTP support of any kind, and he jumped in an required SFTP. Not that their SFTP site that they provided with an 8 year out of date server version that used OpenSSL was going to add much protection, and their 5 char FTPS(Not SFTP, and uses SSL) password that was a shared account and had read/write access to a slew of files.
Yes, if you double the exhaust velocity, you need to increase the energy by 4x assuming the same amount of exaust mass, but you gain more than 4x the acceleration due to efficiency. You have super linear gains because you conserve 100% of the increased energy, but you gain increase efficiency, allowing you to have better acceleration for the amount of energy you consume.
Slashdot Mirror
Our light cone is our Universe. If we cannot interact with it, it may as well not exist.
The Milky Way is only about 100k ly across. A single space able civilization could spread throughout the entire galaxy in only several million years using technology that we currently have access to. A few thousand years from now, spreading over a galaxy will be child's play. Not coming into contact with another space alien life form pretty much means an extinction event happens often enough to kill off such civilizations or we're one of the first in our galaxy.
Get out of the car and start pushing, you may go faster. Civilizations will either cease to exist or start to inhabit new planets.
OpenNTP uses a pool of HTTPS servers to do basic sanity checks against the NTP time. It does a kind of simple NTP using TLS, then uses NTP against your time servers. If the NTP time is too far off from the TLS time, it rejects it. Pretty much all of the practical security of NTPSEC without all of the accuracy reducing overhead.
Except when your OS sleeps an HT "core", it effectively deactivates HT for that real core. One of the reasons Win7 runs better than XP on HT cpus is better thread scheduling. It will attempt to use only one HT core per physical core, then place the virtual core into a deep sleep mode, allowing the CPU to run as if HT is disabled.
From the beginning, one of the benefits of hypertheading is hiding the cost of cache misses. Intel has a proof of concept program that uses one thread to prefetch data, which means it gets hit with a cache miss, and the other thread doesn't get the cache miss because the data is ready just in time. Hyperthreading has a 1 cycle context switch overhead, allowing it to quickly change threads for even the shortest stalls.
The biggest issue HT has against it is split resources, especially the L1 cache. Many types of server workloads are cache sensitive. As for games, many games don't scale well with thread count because of synchronization overhead. HT only gives 10%-20% average gain, meaning each thread runs at 60% peak. The aggregate is a gain for overall throughput, but for single-threaded performance, it takes a hit.
Intel CPUs is actually quite cheap. I paid less for my CPU than my PSU, GPU, SSD, case, and monitor. Just because AMD is cheaper doesn't mean I'm going to saving much money relative to the whole.
It does enhance performance of compute that is memory bandwidth limited and/or the code is not pipelined well enough to take advantage of OoO.
Except an object in free fall due to gravity is in an inertial frame. This means you are not actually accelerating. Gravity is not proper acceleration. Making gravity a force changes this and breaks a lot of fundamental things. One can tell if they're in an accelerating frame. If you're in a free fall, you can't tell which way you're "accelerating" because you are not accelerating.
To be fair, if you spend two hours every morning dressing up to go to work to program, your personality is probably not one compatible with being a great programmer. Most of the super great programmers have a personality of "take me as I am or GTFO". Of course I'm not a " super great", but I do believe I'm above average. I still need to be at least marginally concerned about my appearance. I shower and wear clean clothes, and about once a month I shave. That seems good enough for me.
Funny that the opposite is happening. As the market gets flooded with more noise, it gets harder and harder to replace me. For a large company like Google or Microsoft, talent gravitates towards them. But for smaller companies, they only get what they can find. I may not be getting paid the max, but I have a lot of job security, have great benefits, and get to work in a low stress environment near family.
Working Saturdays. Great way to create negative value. Technical debt everywhere! Humans cannot sustain maximum for long. After maximum is reached, a long cooldown time is required before productivity is back up to normal. I've been confronted in the past about why I was not only leaving hours before everyone else, but why I was leaving before 4p. I just said that I reached the end of my productivity for the day and I was making too many mistakes.
Of course the only teams that miss their deadlines are the one with mandatory death marches. They're also like a rut. Once your entire team is burnt out, they can't be productive again for a while. My personal experience is I can do about 20% more output for about a month, but then I drop down to about -20% output until I get about a month of relaxation. I usually spend the next month doing about -50% until I feel better, then I'm back at 100%. The overall output is much lower, but we do have a yearly burst that must be handled. We're putting a lot of work into reducing that burst.
Increased aggressiveness is a well known trait of testosterone. Of course someone that is more aggressive is going to be more interested in forms of aggression. Did you know that women who were subjected to high levels of testosterone during fetal development are nearly identical to men in interests? It's as if these women completely ignore cultural pressure and do what interests them. Wow, imagine that.
Flip side. Men who had low levels of testosterone during fetal development are much more feminine and have feminine interests. ZOMG! It's like testosterone changes people some how. You do realize that men and women really are the same, the main difference is testosterone levels.
Einstein. Guess what the number one way that is highly correlated with higher testosterone levels. Let me give you a hint. It involves having a penis.
Your description of "toxic masculinity" is pretty much driven by women's expectations of men. Very few men want to act that way, but are rewarded by women for doing so. Fix women first and the problem will solve itself.
Women being attracted to the "bad guy" and good guys never win, are two concepts that have a lot of truth to them. Every woman I've known falls into one of two categories. They're rational and find a good spouse or are irrational and find a jerk. I tell them it won't work out, and a year later they're crying about how all guys are so mean and why can't they find a nice guy. STOP CHOOSING JERKS! Of course most women I know fall into this category and perpetuate the sterotype of men being jerks by always selecting jerks.
Men have the same issue, except with beauty. So many men overlook all of the issues and focus on how pretty a girl is. Don't do it dude, it's not going to work out, she's a needy drama queen. I'm sorry, but a person who cares so much about what others think about them, are rarely stable. Spending 2-3 hours dolling up every night to go out just means they need attention and lots of it. Give me a confident educated woman, that's sexy. Of course I like the eye candy, but that doesn't mean I want to live with them or have anything to do with their drama.
It's kind of genetics. From what I've read it's more testosterone exposure during fetal development, which is typically driven by testes but not always. There are cases were the mother exposes the fetus to high levels of testosterone and women born from these situations are more aggressive, less social, and more masculine all around, including stereotypical male interests.
Good programmers need to be creative. Logic lets you decide if something is good or bad, but you still need to create the "something" in order to judge it. When you combine logic and creativity, you get logically created designs.
The number of women in CS has not gone down, it's the number of men in CS that has skyrocketed as "easy money". The ratio has shifted.
Kind of an interesting discussion. One of the interesting things that have come out of the whole blackhole information paradox is that tossing an elementary particle into a blackhole increases its spherical surface area by exactly one square planck. They said if you run that backwards, it means you can store at most 1 bit(explicitly state binary bit of "data") of information in a cubic planck. That is the density of a blackhole.
It seems that the current set of elementary particles are the highest density you can get. In that sense, information is quantized. If information in quantized and mass is information.
Either way, I can't wait to see the results of this stuff.
Same thing with all of my computers and browsers. Ohh wait... I just went to their home page, forbes.com, then clicked on the link in /. and it suddenly worked. Probably a broken cookie or something.
I wonder why he'd try to make a big deal about 2% when obviously it's not that much. Just enough to about cover inflation. Did it come off as if he was lauding his position to be giving you a raise?
There is a related key attack that doesn't affect AES128 but reduces AES192 to 2^176 ops and AES256 to 2^119 ops. It does require that the key you're trying to attack does not change during the duration of the attack and requires you to have a way to influence the generation of new keys in known ways. By sending in data to the remote server and having it encrypt the data, you can see how the data changes.
A practical attack like trying to attack a web sever's session key would require that you generate at least 2^119 sessions, assuming a new key per session, which is not the norm. Then you would need to send 2^119 payloads of data and retrieve the information. You still need to process the data.
Once you include the 15 packets of TCP+SSL round trips and even minimum 64byte packets, that's 960 bytes. Lets assume at least 1024 byte because I'm ignoring other overheads like TCP, HTTP headers, and session cookies. 1024 bytes times 2^119 is 618,970,019,642,690,137,449,562,112 TiB.
Cartoons? As much as I liked them, I didn't like them more than the Discovery channel or History channel. Before they started to suck.
He views it how it is. Most people not only don't know outside their domain, but are horrible at the one they specialize in. Heck, half of our customers that have their firewalls blocking our ability to transfer files via SFTP, ask us how to configure their firewalls to open ports because they don't know how to do it. I'm talking about network admins. Freaking networking admins asking us how to do their job. Sometimes they just give us admin access to their firewalls and tell us to figure it out.
Another company we worked with had this nasty habit of sending us their private key every time they change their keys. It seemed like they changed their key pairs every few months because they didn't know how to keep their old one when they upgraded their servers. So they just generated a new key and had it signed. Then they'd EMAIL us their public and private key. A freaking Verisign signed private key that they use on their website.
Another company was freaking out that we didn't encrypt our data at rest, then requested that we communicated sensitive data via FTP and legacy zip format to encrypt the payload. Not only did it have known password issues that allowed even the strongest passwords to be easily broken but they required that we used a 6 digit all lower case password and refused to listen to us about it being incredibly weak. Luckily I brought this to the attention of the VP, and we were in the process of phase out all FTP support of any kind, and he jumped in an required SFTP. Not that their SFTP site that they provided with an 8 year out of date server version that used OpenSSL was going to add much protection, and their 5 char FTPS(Not SFTP, and uses SSL) password that was a shared account and had read/write access to a slew of files.
Yes, if you double the exhaust velocity, you need to increase the energy by 4x assuming the same amount of exaust mass, but you gain more than 4x the acceleration due to efficiency. You have super linear gains because you conserve 100% of the increased energy, but you gain increase efficiency, allowing you to have better acceleration for the amount of energy you consume.
That blocks 20% of the star's light? Asteroid belts are mostly empty.