Vampir is used at IU for summarizing and analyzing the performance of parallel applications in different domains. Examples include summarizing the performance of an image analysis pipeline with 640 repeated executions, analyzing a runtime anomaly on an IBM cluster, tracing applications on Cell BE systems, identifying a memory bottleneck in a particle swarm optimizer, finding an I/O issue in an EMAN application, understanding two applications for a cluster competition, tracing Pthreads in a Swarp application, and analyzing an MD simulation code parallelized with serial, OpenMP, MPI and hybrid approaches. Vampir provided insights into optimizations and issues across these different use cases.
Goed bestuur bij overdracht in familiebedrijven: loslaten en oppakkenKarin Kleingeld
Jaarlijks vinden tussen de 11.000 en 15.000 bedrijfsoverdrachten plaats. Rond de 25.000 bedrijven staan te koop. Hiervan betreft 30% een familiebedrijf. Het is een kwetsbaar proces voor ieder bedrijf. Voor familiebedrijven komen daar een aantal dimensies bij. 40% van de overdrachten mislukt, maar er is ook goed nieuws: geslaagde overdrachten hebben een positieve impact op omzet en winst.
In dit whitepaper gaan we in op goed bestuur als fundament onder een succesvolle overdracht. We zetten de laatste inzichten op een rij en vullen dat aan met een aantal spekende voorbeelden.
Goed bestuur bij overdracht in familiebedrijven: loslaten en oppakkenKarin Kleingeld
Jaarlijks vinden tussen de 11.000 en 15.000 bedrijfsoverdrachten plaats. Rond de 25.000 bedrijven staan te koop. Hiervan betreft 30% een familiebedrijf. Het is een kwetsbaar proces voor ieder bedrijf. Voor familiebedrijven komen daar een aantal dimensies bij. 40% van de overdrachten mislukt, maar er is ook goed nieuws: geslaagde overdrachten hebben een positieve impact op omzet en winst.
In dit whitepaper gaan we in op goed bestuur als fundament onder een succesvolle overdracht. We zetten de laatste inzichten op een rij en vullen dat aan met een aantal spekende voorbeelden.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
1. What Is It Good For?!
Real World Examples of
Vampir Usage at IU
Robert Henschel
rhensche@indiana.edu
Thanks to Scott Teige, Don Berry, Scott Michael, Huian Li, Judy Qiu for providing traces.
May 2009
2. Contents
• IPP – Repeated Execution of an Application
• Runtime Anomaly on the iDataPlex (Tachyon)
• Cell B.E. Tracing
• Particle Swarm Optimizer – Memory Tracing
• Finding an I/O Bottleneck (EMAN)
• Cluster Challenge
– WPP, GAMESS
• Tracing on Windows
• Swarp – Pthread Tracing
• MD Simulation
Robert Henschel
3. What is this all about
• Provide a feeling for what Vampir can be used for
• Show a few of Vampirs features
• Raise the awareness that tracing software is a
complex undertaking
Robert Henschel
4. IPP - Repeated Execution of an Application
• Image analysis pipeline
• Every module/binary is called a few hundred times
during a single run
• Setting VT_FILE_UNIQUE=yes allows for normal
execution of the pipeline, while traces are produced
• We ended up with 640 traces, that we did not want to
look at
• otfprofile was used in bash script to retrieve the
profile of every trace, and then combine to a profile of
the entire run
Robert Henschel
5. IPP - Repeated Execution of an Application
ppImage_103.0.def.z
ppImage_103.0.marker.z
ppImage_103.1.events.z
ppImage_103.otf
ppImage_103.otf_collop.csv
ppImage_103.otf_data.csv
ppImage_103.otf_func.csv
ppImage_103.otf_p2p.csv
ppImage_103.otf_result.aux
ppImage_103.otf_result.dvi
ppImage_103.otf_result.log
ppImage_103.otf_result.ps
ppImage_103.otf_result.tex
Robert Henschel
6. IPP - Repeated Execution of an Application
Robert Henschel
7. IPP - Repeated Execution of an Application
Robert Henschel
8. IPP - Repeated Execution of an Application
Robert Henschel
9. IPP - Repeated Execution of an Application
Robert Henschel
10. IPP - Repeated Execution of an Application
Robert Henschel
11. IPP - Repeated Execution of an Application
Robert Henschel
12. IPP - Repeated Execution of an Application
Robert Henschel
13. IPP - Repeated Execution of an Application
Robert Henschel
14. IPP - Repeated Execution of an Application
Robert Henschel
15. IPP - Repeated Execution of an Application
Robert Henschel
16. IPP - Repeated Execution of an Application
Robert Henschel
17. IPP - Repeated Execution of an Application
Robert Henschel
18. IBM iDataPlex Testing
• We are testing an IBM iDataPlex system
– 84 dual quad-core node cluster
– Infiniband interconnect
• Tachyon, a part of the SPEC MPI2007 benchmark suite
had a strange runtime behavior
– 100 vs. 200 seconds
• Tracing the application, made the problem go away,
stable runtime at 110 seconds
• There will be a deeper interaction of OpenMPI and
VampirTrace in the future, OpenMPI 1.3 now contains
VampirTrace
Robert Henschel
24. Cell B.E. Tracing
• Code exists as serial version, MPI version and as Cell
B.E. version
• Great to be able to use the same tracing tool on both
platforms and for different parallelization strategies
• We used a beta version of VampirTrace for Cell B.E.
Robert Henschel
41. EMAN Tracing
• Application ran very slow on regular hardware, NFS
mounted file system
• Application was faster on Lustre
• Application was really fast on shared memory filesystem
• Suspected I/O problem
• However, the actual I/O problem was not visible in
Vampir, as this had to do with file locking
Robert Henschel
45. Cluster Challenge
• WPP (Wave Propagation Program)
• Vampir helped to understand the code (few comments,
not sure what the code does, and how it does it)
• PAPI counter helped to show that on X86, peak floating
point performance was already achieved, thus, not
much room for tuning, besides rewriting the algorithm
Robert Henschel
54. Cluster Challenge
• GAMESS
• Problem with MPI communication, while socket
communication worked just fine
Robert Henschel
55. Tracing on Windows
• On Windows, the trace creation is handled by MS MPI
• Unfortunately, not a lot of details are provided, thus ,the
traces look a bit different to traces that are created on
Linux
– MPI collective operations are not marked as such!
• However, on Windows, you are able to trace C#
application in addition to C/C++/Fortran applications
– And possibly other applications, that are build on top
of MS MPI
Robert Henschel
65. Swarp - Pthread Tracing
• SWARP can be run as a Pthread parallel application
• Tracing of Pthread parallel applications is a new feature
of the latest VampirTrace version
• Enabled by default, if Pthread flag is detected on the
compile and link commands, but can be forced as well
• Compiling with -DVTRACE_PTHREAD and including
vt_user.h in the appropriate file
– Will trace the overhead of Pthread functions
Robert Henschel
71. MD Application, Serial, OpenMP, MPI, Hybrid
• MD application, part of the research of physics
professor Chuck Horowitz
• Used for studying dense nuclear matter in supernovae,
white dwarf and neutron stars
• In production use on a daily basis
• Exists as serial, MPI, OpenMP, Hybrid and
MDGRAPE-2 application
• MDGRAPE-2 tracing is not supported out of the box,
but could be implemented using manual instrumentation
Robert Henschel
